Prevent null pointer dereference / logically dead code / other misc. warnings

configuration.c

@@ -3126,6 +3126,8 @@ bool config_save_overrides(int override_type)
 
    RARCH_LOG("[overrides] looking for changed settings... \n");
 
+   if (conf)
+   {
       for (i = 0; i < (unsigned)bool_settings_size; i++)
       {
          if ((*bool_settings[i].ptr) != (*bool_overrides[i].ptr))
@@ -3162,6 +3164,7 @@ bool config_save_overrides(int override_type)
                   *float_overrides[i].ptr);
          }
       }
+
       for (i = 0; i < (unsigned)array_settings_size; i++)
       {
          if (!string_is_equal(array_settings[i].ptr, array_overrides[i].ptr))
@@ -3174,6 +3177,7 @@ bool config_save_overrides(int override_type)
                   array_overrides[i].ptr);
          }
       }
+
       for (i = 0; i < (unsigned)path_settings_size; i++)
       {
          if (!string_is_equal(path_settings[i].ptr, path_overrides[i].ptr))
@@ -3186,6 +3190,7 @@ bool config_save_overrides(int override_type)
                   path_overrides[i].ptr);
          }
       }
+   }
 
    ret = false;
 

dirs.c

@@ -86,9 +86,6 @@ bool dir_free_shader(void)
    struct rarch_dir_list *dir_list = 
       (struct rarch_dir_list*)&dir_shader_list;
 
-   if (!dir_list)
-      return false;
-
    dir_list_free(dir_list->list);
    dir_list->list = NULL;
    dir_list->ptr  = 0;

tasks/task_content.c

@@ -678,8 +678,11 @@ static bool init_content_file_set_attribs(
 
       runloop_ctl(RUNLOOP_CTL_SYSTEM_INFO_GET, &system);
 
+      if (system)
+      {
          attr.i               = system->info.block_extract;
          attr.i              |= system->info.need_fullpath << 1;
+      }
       attr.i              |= (!content_does_not_need_content())  << 2;
 
       if (!path_get_content(&fullpath)