Fix a fun bug in read_all that was corrupting config files on windows, and probably doing other bad stuff too.

svn:r2898

src/common/util.c

@@ -693,7 +693,7 @@ int read_all(int fd, char *buf, size_t count, int isSocket) {
       break;
     numread += result;
   }
-  return count;
+  return numread;
 }
 
 /*