Add missing include, required on some platforms

mhagander · mhagander · commit 48870dd9f752 · 2014-02-12T20:04:13.000+01:00
Noted by the buildfarm and Andres Freund
diff --git a/src/bin/pg_basebackup/pg_basebackup.c b/src/bin/pg_basebackup/pg_basebackup.c
@@ -22,6 +22,7 @@
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <signal.h>
 #include <time.h>
 
 #ifdef HAVE_LIBZ
