fix(workdir): free before the context

Co-authored-by: Marco Casaroli <casaroli@users.noreply.github.com>
Signed-off-by: Krisztian <34309983+kr-t@users.noreply.github.com>

Author: kr-t

src/ocre/context.c

@@ -110,8 +110,10 @@ struct ocre_context *ocre_context_create(const char *workdir)
 	return context;
 
 error:
-	free(context);
-	free(context->working_directory);
+    if (context) {
+	    free(context->working_directory);
+    }
+    free(context);
 
 	return NULL;
 };