Fix memory leaks

Fix a couple leaks caught by valgrind.
diff --git a/src/gl-renderer.c b/src/gl-renderer.c
index fdde9ae..ea6631f 100644
--- a/src/gl-renderer.c
+++ b/src/gl-renderer.c
@@ -1707,6 +1707,8 @@
 
 	eglTerminate(gr->egl_display);
 	eglReleaseThread();
+
+	free(gr);
 }
 
 static int