srandomdev(): avoid warning about "uninitialized use"

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

winsup/cygwin/random.cc

@@ -310,7 +310,7 @@ srandomdev()
 
 	if (getentropy ((void *) state, len)) {
 		struct timeval tv;
-		unsigned long junk;
+		unsigned long junk = 0;
 
 		gettimeofday(&tv, NULL);
 		srandom((getpid() << 16) ^ tv.tv_sec ^ tv.tv_usec ^ dummy(&junk));