d3dx9: Make qsort() callback functions cdecl.

dlls/d3dx9_36/mesh.c

@@ -1207,7 +1207,7 @@ struct vertex_metadata {
   DWORD first_shared_index;
 };
 
-static int compare_vertex_keys(const void *a, const void *b)
+static int __cdecl compare_vertex_keys(const void *a, const void *b)
 {
     const struct vertex_metadata *left = a;
     const struct vertex_metadata *right = b;
@@ -1585,7 +1585,7 @@ static void fill_attribute_table(DWORD *attrib_buffer, DWORD numfaces, void *ind
     attrib_table_size++;
 }
 
-static int attrib_entry_compare(const void *a, const void *b)
+static int __cdecl attrib_entry_compare(const void *a, const void *b)
 {
     const DWORD *ptr_a = *(const DWORD **)a;
     const DWORD *ptr_b = *(const DWORD **)b;
@@ -5840,7 +5840,7 @@ static D3DXVECTOR2 *triangulation_get_next_point(struct triangulation *t, struct
     return &outline->items[i].pos;
 }
 
-static int compare_vertex_indices(const void *a, const void *b)
+static int __cdecl compare_vertex_indices(const void *a, const void *b)
 {
     const struct point2d_index *idx1 = a, *idx2 = b;
     const D3DXVECTOR2 *p1 = &idx1->outline->items[idx1->vertex].pos;

dlls/d3dx9_36/preshader.c

@@ -640,7 +640,7 @@ static void append_pres_const_sets_for_shader_input(struct d3dx_const_tab *const
     }
 }
 
-static int compare_const_set(const void *a, const void *b)
+static int __cdecl compare_const_set(const void *a, const void *b)
 {
     const struct d3dx_const_param_eval_output *r1 = a;
     const struct d3dx_const_param_eval_output *r2 = b;