ignore prompt if it is empty in addition to NULL - dmenu

commit 1299e41447fe5850d127857a68f37c5badd491ce
parent 38fccafada4eee3e4e0301d7c6eadd3c5788b305
Author: Moritz Wilhelmy <moritz+hg@wzff.de>
Date:   Tue, 15 May 2012 11:47:54 +0200

ignore prompt if it is empty in addition to NULL
Diffstat:
M dmenu.c  | 4 ++--

1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/dmenu.c b/dmenu.c
@@ -169,7 +169,7 @@ drawmenu(void) {
     dc->h = bh;
     drawrect(dc, 0, 0, mw, mh, True, BG(dc, normcol));
 
-    if(prompt) {
+    if(prompt && *prompt) {
         dc->w = promptw;
         drawtext(dc, prompt, selcol);
         dc->x = dc->w;
@@ -579,7 +579,7 @@ setup(void) {
         y = topbar ? 0 : DisplayHeight(dc->dpy, screen) - mh;
         mw = DisplayWidth(dc->dpy, screen);
     }
-    promptw = prompt ? textw(dc, prompt) : 0;
+    promptw = (prompt && *prompt) ? textw(dc, prompt) : 0;
     inputw = MIN(inputw, mw/3);
     match();