silence compiler warnings
diff --git a/progs/samples/select.c b/progs/samples/select.c
index 5a73a45..2c8f333 100644
--- a/progs/samples/select.c
+++ b/progs/samples/select.c
@@ -174,7 +174,7 @@
 static void GrowTri(GLint h)
 {
     float v[2];
-    float *oldV;
+    float *oldV = NULL;
     GLint i;
 
     v[0] = objects[h].v1[0] + objects[h].v2[0] + objects[h].v3[0];