Slight change to determine_path_from_string rules

src/parser.cpp

@@ -4197,6 +4197,8 @@ bool is_package_name_reserved(String const &name) {
 bool determine_path_from_string(gbMutex *file_mutex, Ast *node, String base_dir, String original_string, String *path) {
 	GB_ASSERT(path != nullptr);
 
+	// NOTE(bill): if file_mutex == nullptr, this means that the code is used within the semantics stage
+
 	gbAllocator a = heap_allocator();
 	String collection_name = {};
 
@@ -4210,12 +4212,14 @@ bool determine_path_from_string(gbMutex *file_mutex, Ast *node, String base_dir,
 
 	bool has_windows_drive = false;
 #if defined(GB_SYSTEM_WINDOWS)
+	if (file_mutex == nullptr) {
 		if (colon_pos == 1 && original_string.len > 2) {
 			if (original_string[2] == '/' || original_string[2] == '\\') {
 				colon_pos = -1;
 				has_windows_drive = true;
 			}
 		}
+	}
 #endif
 
 	String file_str = {};