Fix compile on win32

Author: StefanKochEtas

parser/metac_expr_parser.c

@@ -1409,7 +1409,7 @@ expr_argument_list_t MetaCParser_ParseArgumentList(metac_parser_t* self, parse_e
         LocationFromToken(self, MetaCParser_PeekToken(self, 0));
 
     metac_token_t* peekToken;
-    expr_argument_list_t arguments = {0};
+    expr_argument_list_t arguments = {(metac_expr_kind_t)0};
     expr_argument_t** nextArgument = &arguments.Arguments;
     uint32_t nArguments = 0;
     uint32_t hash = ~0;

semantic/metac_type_semantic.c

@@ -935,7 +935,8 @@ metac_type_index_t TypeArraySemantic(metac_sema_state_t* self,
             xprintf("Array dimension should eval to integer but it is: %s\n",
                 MetaCExprKind_toChars(dim->Kind));
             //TODO register this decl_type_t as an error so we do not reevaluate
-            return (metac_type_index_t) {0};
+            static const metac_type_index_t invalidTypeIndex = {0};
+            return invalidTypeIndex;
         }
     }
     uint32_t dimValue = (

semantic/metac_type_table.h

@@ -189,6 +189,7 @@ static inline const bool MetaCExpr_Equal(const metac_expr_t* a,
                                          const metac_expr_t* b)
 {
     assert(0);
+    return false;
 }
 
 static inline const bool TemplateSlotsEqual(const metac_type_table_slot_t* a,