added sys/signal.h inclusion for BSD compliance

diff --git a/dwm.c b/dwm.c
index d6dc4676e1a31cc69f18ccca4363fb8645b4b2d3..73ce7bf4e4de7a65cd8be1f255934724f432ad10 100644 (file)
--- a/dwm.c
+++ b/dwm.c
@@ -27,6 +27,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include <sys/signal.h>
 #include <sys/types.h>
 #include <sys/wait.h>
 #include <X11/cursorfont.h>