Addressed PR comments.

upb/def.c

@@ -2403,7 +2403,7 @@ static int count_bits_debug(uint64_t x) {
 static int compare_int32(const void* a_ptr, const void* b_ptr) {
   int32_t a = *(int32_t*)a_ptr;
   int32_t b = *(int32_t*)b_ptr;
-  return (a) < (b) ? -1 : ((a) == (b) ? 0 : 1);
+  return a < b ? -1 : (a == b ? 0 : 1);
 }
 
 upb_MiniTable_Enum* create_enumlayout(symtab_addctx* ctx,

upbc/protoc-gen-upb.cc

@@ -1324,7 +1324,7 @@ int WriteEnums(const protobuf::FileDescriptor* file, Output& output) {
     if (!values.empty()) {
       values_init = EnumInit(e) + "_values";
       output("static const int32_t $0[$1] = {\n", values_init, values.size());
-      for (auto value : values) {
+      for (int32_t value : values) {
         output("  $0,\n", value);
       }
       output("};\n\n");