clean-up a wee-bit of code

git-svn-id: https://svn.musicpd.org/mpd/trunk@895 09075e82-0dd4-0310-85a5-a0d7c8717e4f

src/myfprintf.c

@@ -44,8 +44,13 @@ void blockingWrite(int fd, char * string) {
 	while(len) {
 		ret = write(fd,string,len);
 		if(ret<0) {
-			if(errno==EAGAIN || errno==EINTR) continue;
-			return;
+			switch(errno) {
+			case EAGAIN:
+			case EINTR:
+				continue;
+			default:
+				return;
+			}
 		}
 		len-= ret;
 		string+= ret;