Codechange: Suppress warnings when asserts are disabled (#8916)

src/3rdparty/squirrel/squirrel/sqcompiler.cpp

@@ -836,6 +836,7 @@ public:
 			SQInteger val = _fs->PopTarget();
 			SQInteger key = _fs->PopTarget();
 			SQInteger attrs = hasattrs ? _fs->PopTarget():-1;
+			(void)attrs; // assert only
 			assert((hasattrs && attrs == key-1) || !hasattrs);
 			unsigned char flags = (hasattrs?NEW_SLOT_ATTRIBUTES_FLAG:0)|(isstatic?NEW_SLOT_STATIC_FLAG:0);
 			SQInteger table = _fs->TopTarget(); //<<BECAUSE OF THIS NO COMMON EMIT FUNC IS POSSIBLE

src/3rdparty/squirrel/squirrel/sqstate.cpp

@@ -252,7 +252,9 @@ SQInteger SQSharedState::CollectGarbage(SQVM *vm)
 	SQVM *vms = _thread(_root_vm);
 
 	vms->Mark(&tchain);
+#ifndef NDEBUG
 	SQInteger x = _table(_thread(_root_vm)->_roottable)->CountUsed();
+#endif
 	_refs_table.Mark(&tchain);
 	MarkObject(_registry,&tchain);
 	MarkObject(_consts,&tchain);
@@ -289,8 +291,10 @@ SQInteger SQSharedState::CollectGarbage(SQVM *vm)
 		t = t->_next;
 	}
 	_gc_chain = tchain;
+#ifndef NDEBUG
 	SQInteger z = _table(_thread(_root_vm)->_roottable)->CountUsed();
 	assert(z == x);
+#endif
 	return n;
 }
 #endif

src/3rdparty/squirrel/squirrel/sqvm.cpp

@@ -1471,8 +1471,8 @@ bool SQVM::DeleteSlot(const SQObjectPtr &self,const SQObjectPtr &key,SQObjectPtr
 
 bool SQVM::Call(SQObjectPtr &closure,SQInteger nparams,SQInteger stackbase,SQObjectPtr &outres,SQBool raiseerror,SQBool can_suspend)
 {
-#ifdef _DEBUG
-SQInteger prevstackbase = _stackbase;
+#ifndef NDEBUG
+	SQInteger prevstackbase = _stackbase;
 #endif
 	switch(type(closure)) {
 	case OT_CLOSURE: {
@@ -1504,7 +1504,7 @@ SQInteger prevstackbase = _stackbase;
 	default:
 		return false;
 	}
-#ifdef _DEBUG
+#ifndef NDEBUG
 	if(!_suspended) {
 		assert(_stackbase == prevstackbase);
 	}