fix packed gep loads with wrong alignment

src/checker.cpp

@@ -4315,7 +4315,7 @@ gb_internal bool correct_single_type_alias(CheckerContext *c, Entity *e) {
 
 gb_internal bool correct_type_alias_in_scope_backwards(CheckerContext *c, Scope *s) {
 	bool correction = false;
-	for (u32 n = s->elements.capacity, i = n-1; i < n; i--) {
+	for (u32 n = s->elements.count, i = n-1; i < n; i--) {
 		auto const &entry = s->elements.entries[i];
 		Entity *e = entry.value;
 		if (entry.hash && e != nullptr) {

src/llvm_backend.hpp

@@ -66,6 +66,7 @@ struct lbProcedure;
 struct lbValue {
 	LLVMValueRef value;
 	Type *type;
+	bool is_packed;
 };
 
 

src/types.cpp

@@ -948,6 +948,7 @@ gb_internal void set_base_type(Type *t, Type *base) {
 	}
 }
 
+
 gb_internal Type *alloc_type(TypeKind kind) {
 	// gbAllocator a = heap_allocator();
 	gbAllocator a = permanent_allocator();