commit 281174445ba2b6e1160b2b7b4490eebb0714eb37
from: Aurélien Aptel <aurelien.aptel@gmail.com>
date: Tue Jan 10 21:21:03 2012 UTC

fix segfault in selection. (thx Martti Kühne)

commit - 197c46686424cc7bdc06da5c980e38ff654f98fa
commit + 281174445ba2b6e1160b2b7b4490eebb0714eb37
blob - e1934435b6f8aada31ffaed553da12d9c02a2966
blob + c3d0888262ddc43d301ad4a29409e345cd182e13
--- st.c
+++ st.c
@@ -547,7 +547,7 @@ selrequest(XEvent *e) {
 				XA_ATOM, 32, PropModeReplace,
 				(unsigned char *) &string, 1);
 		xev.property = xsre->property;
-	} else if(xsre->target == sel.xtarget) {
+	} else if(xsre->target == sel.xtarget && sel.clip != NULL) {
 		XChangeProperty(xsre->display, xsre->requestor, xsre->property,
 				xsre->target, 8, PropModeReplace,
 				(unsigned char *) sel.clip, strlen(sel.clip));