fix windows build

Change-Id: Ia7b236f1a915630fe85d488072efb9784ba10dad
diff --git a/commandline.c b/commandline.c
index b92162f..23722b6 100644
--- a/commandline.c
+++ b/commandline.c
@@ -552,7 +552,7 @@
     opt = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, (const void *) &opt, sizeof(opt));
 
     int last_percent = -1;
-    while (true) {
+    for (;;) {
         if (readx(fd, buf, 8)) {
             fprintf(stderr, "* failed to read command: %s\n", adb_error());
             status = -1;