Dont leak memory when calling load surfaces multiple times

.gitignore

@@ -6,3 +6,5 @@
 run-test
 *.z64
 *.so
+compile_commands.json
+/.cache/

src/decomp/game/mario.c

@@ -1,5 +1,6 @@
 #include <stdlib.h>
 #include <math.h>
+#include <stdio.h> // For printf before exit, TODO remove
 
 #include "../shim.h"
 #include "../include/PR/os_cont.h"

src/libsm64.c

@@ -122,9 +122,9 @@ SM64_LIB_FN void sm64_static_surfaces_load( const struct SM64Surface *surfaceArr
     surfaces_load_static( surfaceArray, numSurfaces );
 }
 
-SM64_LIB_FN uint32_t sm64_mario_create( int16_t x, int16_t y, int16_t z )
+SM64_LIB_FN int32_t sm64_mario_create( int16_t x, int16_t y, int16_t z )
 {
-    uint32_t marioIndex = obj_pool_alloc_index( &s_mario_instance_pool, sizeof( struct MarioInstance ));
+    int32_t marioIndex = obj_pool_alloc_index( &s_mario_instance_pool, sizeof( struct MarioInstance ));
     struct MarioInstance *newInstance = s_mario_instance_pool.objects[marioIndex];
 
     newInstance->globalState = global_state_create();

src/libsm64.h

@@ -74,7 +74,7 @@ extern SM64_LIB_FN void sm64_global_terminate( void );
 
 extern SM64_LIB_FN void sm64_static_surfaces_load( const struct SM64Surface *surfaceArray, uint32_t numSurfaces );
 
-extern SM64_LIB_FN uint32_t sm64_mario_create( int16_t x, int16_t y, int16_t z );
+extern SM64_LIB_FN int32_t sm64_mario_create( int16_t x, int16_t y, int16_t z );
 extern SM64_LIB_FN void sm64_mario_tick( uint32_t marioId, const struct SM64MarioInputs *inputs, struct SM64MarioState *outState, struct SM64MarioGeometryBuffers *outBuffers );
 extern SM64_LIB_FN void sm64_mario_delete( uint32_t marioId );
 

src/load_surfaces.c

@@ -223,6 +223,9 @@ struct Surface *loaded_surface_iter_get_at_index( uint32_t groupIndex, uint32_t
 
 void surfaces_load_static( const struct SM64Surface *surfaceArray, uint32_t numSurfaces )
 {
+    if( s_static_surface_list != NULL )
+        free( s_static_surface_list );
+
     s_static_surface_count = numSurfaces;
     s_static_surface_list = malloc( sizeof( struct Surface ) * numSurfaces );