Resource leaks fixes (catched by Coverity)

cheevos.c

@@ -2010,6 +2010,7 @@ static unsigned cheevos_find_game_id_nes(
 
       MD5_Update(&ctx, (void*) data, rom_size << 14);
       MD5_Final(hash, &ctx);
+      free(data);
    }
    
    to = timeout;

config_file_userdata.c

@@ -82,6 +82,7 @@ int config_userdata_get_float_array(void *userdata, const char *key_str,
          (*values)[i] = (float)strtod(list->elems[i].data, NULL);
       *out_num_values = list->size;
       string_list_free(list);
+      free(str);
       return true;
    }
 
@@ -111,6 +112,7 @@ int config_userdata_get_int_array(void *userdata, const char *key_str,
          (*values)[i] = (int)strtod(list->elems[i].data, NULL);
       *out_num_values = list->size;
       string_list_free(list);
+      free(str);
       return true;
    }
 

libretro-common/formats/png/rpng.c

@@ -783,7 +783,10 @@ static struct rpng_process *rpng_process_init(rpng_t *rpng, unsigned *width, uns
    process->stream = process->stream_backend->stream_new();
 
    if (!process->stream)
+   {
+      free(process);
       return NULL;
+   }
 
    if (!process->stream_backend->stream_decompress_init(process->stream))
    {

libretro-db/libretrodb.c

@@ -566,6 +566,7 @@ clean:
    if (cur.is_valid)
       libretrodb_cursor_close(&cur);
    bintree_free(tree);
+   free(tree);
    return 0;
 }
 

patch.c

@@ -520,7 +520,10 @@ static bool apply_patch_content(uint8_t **buf,
    if (!filestream_read_file(patch_path, &patch_data, &patch_size))
       return false;
    if (patch_size < 0)
+   {
+      free(patch_data);
       return false;
+   }
 
    if (!path_file_exists(patch_path))
    {

tasks/task_database_cue.c

@@ -191,7 +191,10 @@ static int detect_ps1_game_sub(const char *track_path,
       tmp += *tmp;
    }
    if(tmp >= (buffer + 2048 * 2))
+   {
+      filestream_close(fp);
       return 0;
+   }
 
    cd_sector = tmp[2] | (tmp[3] << 8) | (tmp[4] << 16);
    filestream_seek(fp, 13 + skip + cd_sector * frame_size, SEEK_SET);