Fix typo.

src/llvm_backend_debug.cpp

@@ -739,7 +739,7 @@ gb_internal LLVMMetadataRef lb_debug_type_internal(lbModule *m, Type *type) {
 	}
 
 	case Type_Map: {
-		init_map_internal_debug_types(bt);
+		init_map_internal_debug_types(type);
 		Type *bt = base_type(type->Map.debug_metadata_type);
 		GB_ASSERT(bt->kind == Type_Struct);