Fixed repl bug

repl/repl_main.c

@@ -152,6 +152,9 @@ int main(int argc, const char* argv[]) {
 	if (Toy_commandLine.compilefile && Toy_commandLine.outfile) {
 		size_t size = 0;
 		char* source = Toy_readFile(Toy_commandLine.compilefile, &size);
+		if (!source) {
+			return 1;
+		}
 		unsigned char* tb = Toy_compileString(source, &size);
 		if (!tb) {
 			return 1;

repl/repl_tools.c

@@ -145,6 +145,9 @@ void Toy_runSource(char* source) {
 void Toy_runSourceFile(char* fname) {
 	size_t size = 0; //not used
 	char* source = Toy_readFile(fname, &size);
+	if (!source) {
+		return;
+	}
 	Toy_runSource(source);
 	free((void*)source);
 }