commands: remove pointless NULL checks

Most property implementations checked whether the "arg" parameter was
NULL. This is entirely pointless, because NULL is actually never pased.
It was inconsistently done, too. Remove the checks.

1 files changed, 2 insertions, 36 deletions

diff --git a/m_property.c b/m_property.c
index c35cc51f9d..3f2468e53c 100644
--- a/m_property.c
+++ b/m_property.c
@@ -57,8 +57,6 @@ static int do_action(const m_option_t *prop_list, const char *name,
         return M_PROPERTY_UNKNOWN;
     r = ((m_property_ctrl_f)prop->p)(prop, action, arg, ctx);
     if (action == M_PROPERTY_GET_TYPE && r < 0) {
-        if (!arg)
-            return M_PROPERTY_ERROR;
         *(const m_option_t **)arg = prop;
         return M_PROPERTY_OK;
     }
@@ -90,8 +88,6 @@ int m_property_do(const m_option_t *prop_list, const char *name,
             free(val);
             return r;
         }
-        if (!arg)
-            return M_PROPERTY_ERROR;
         char *str = m_option_print(opt, val);
         free(val);
         *(char **)arg = str;
@@ -105,8 +101,6 @@ int m_property_do(const m_option_t *prop_list, const char *name,
         if ((r =
              do_action(prop_list, name, M_PROPERTY_GET_TYPE, &opt, ctx)) <= 0)
             return r;
-        if (!arg)
-            return M_PROPERTY_ERROR;
         val = calloc(1, opt->type->size);
         if ((r = m_option_parse(opt, bstr0(opt->name), bstr0(arg), val)) <= 0) {
             free(val);
@@ -268,8 +262,6 @@ int m_property_int_ro(const m_option_t *prop, int action,
 {
     switch (action) {
     case M_PROPERTY_GET:
-        if (!arg)
-            return 0;
         *(int *)arg = var;
         return 1;
     }
@@ -281,8 +273,6 @@ int m_property_int_range(const m_option_t *prop, int action,
 {
     switch (action) {
     case M_PROPERTY_SET:
-        if (!arg)
-            return 0;
         M_PROPERTY_CLAMP(prop, *(int *)arg);
         *var = *(int *)arg;
         return 1;
@@ -295,8 +285,6 @@ int m_property_flag_ro(const m_option_t *prop, int action,
 {
     switch (action) {
     case M_PROPERTY_PRINT:
-        if (!arg)
-            return 0;
         *(char **)arg = talloc_strdup(NULL, (var > prop->min) ?
                                mp_gtext("enabled") : mp_gtext("disabled"));
         return 1;
@@ -319,13 +307,9 @@ int m_property_float_ro(const m_option_t *prop, int action,
 {
     switch (action) {
     case M_PROPERTY_GET:
-        if (!arg)
-            return 0;
         *(float *)arg = var;
         return 1;
     case M_PROPERTY_PRINT:
-        if (!arg)
-            return 0;
         *(char **)arg = talloc_asprintf(NULL, "%.2f", var);
         return 1;
     }
@@ -337,8 +321,6 @@ int m_property_float_range(const m_option_t *prop, int action,
 {
     switch (action) {
     case M_PROPERTY_SET:
-        if (!arg)
-            return 0;
         M_PROPERTY_CLAMP(prop, *(float *)arg);
         *var = *(float *)arg;
         return 1;
@@ -351,8 +333,6 @@ int m_property_delay(const m_option_t *prop, int action,
 {
     switch (action) {
     case M_PROPERTY_PRINT:
-        if (!arg)
-            return 0;
         *(char **)arg = talloc_asprintf(NULL, "%d ms", ROUND((*var) * 1000));
         return 1;
     default:
@@ -365,13 +345,9 @@ int m_property_double_ro(const m_option_t *prop, int action,
 {
     switch (action) {
     case M_PROPERTY_GET:
-        if (!arg)
-            return 0;
         *(double *)arg = var;
         return 1;
     case M_PROPERTY_PRINT:
-        if (!arg)
-            return 0;
         *(char **)arg = talloc_asprintf(NULL, "%.2f", var);
         return 1;
     }
@@ -383,12 +359,8 @@ int m_property_time_ro(const m_option_t *prop, int action,
 {
     switch (action) {
     case M_PROPERTY_PRINT:
-        if (!arg)
-            return M_PROPERTY_ERROR;
-        else {
-            *(char **)arg = mp_format_time(var, false);
-            return M_PROPERTY_OK;
-        }
+        *(char **)arg = mp_format_time(var, false);
+        return M_PROPERTY_OK;
     }
     return m_property_double_ro(prop, action, arg, var);
 }
@@ -398,13 +370,9 @@ int m_property_string_ro(const m_option_t *prop, int action, void *arg,
 {
     switch (action) {
     case M_PROPERTY_GET:
-        if (!arg)
-            return 0;
         *(char **)arg = str;
         return 1;
     case M_PROPERTY_PRINT:
-        if (!arg)
-            return 0;
         *(char **)arg = talloc_strdup(NULL, str);
         return 1;
     }
@@ -415,8 +383,6 @@ int m_property_bitrate(const m_option_t *prop, int action, void *arg, int rate)
 {
     switch (action) {
     case M_PROPERTY_PRINT:
-        if (!arg)
-            return M_PROPERTY_ERROR;
         *(char **)arg = talloc_asprintf(NULL, "%d kbps", rate * 8 / 1000);
         return M_PROPERTY_OK;
     }