Fix segfault on linux; from nicm

diff --git a/scrotwm.c b/scrotwm.c
index 6f26b63..ca2a281 100644 (file)
--- a/scrotwm.c
+++ b/scrotwm.c
@@ -2024,7 +2024,7 @@ setup_screens(void)
                else 
                        ncrtc = sr->ncrtc;
 
-               for (c = 0; c < ncrtc; c++) {
+               for (c = 0, ci = NULL; c < ncrtc; c++) {
                        ci = XRRGetCrtcInfo(display, sr, sr->crtcs[c]);
                        if (ci->noutput == 0)
                                continue;
@@ -2038,7 +2038,8 @@ setup_screens(void)
                                    ci->x, ci->y, ci->width, ci->height);
                        w++;
                }
-               XRRFreeCrtcInfo(ci);
+               if (ci)
+                       XRRFreeCrtcInfo(ci);
                XRRFreeScreenResources(sr);
 #else
                new_region(&screens[i], &screens[i].ws[w], 0, 0,