Remove yet more fixed-length buffers (and their overruns).

Bug: 20317724
Change-Id: If137fc96f5f23576ccecd388ac87afefa47337c6
diff --git a/adb/usb_linux_client.cpp b/adb/usb_linux_client.cpp
index 8d670f8..343f20c 100644
--- a/adb/usb_linux_client.cpp
+++ b/adb/usb_linux_client.cpp
@@ -163,7 +163,7 @@
     struct usb_handle *usb = (struct usb_handle *)x;
     int fd;
 
-    while (1) {
+    while (true) {
         // wait until the USB device needs opening
         adb_mutex_lock(&usb->lock);
         while (usb->fd != -1)
@@ -347,14 +347,14 @@
 {
     struct usb_handle *usb = (struct usb_handle *)x;
 
-    while (1) {
+    while (true) {
         // wait until the USB device needs opening
         adb_mutex_lock(&usb->lock);
         while (usb->control != -1 && usb->bulk_in != -1 && usb->bulk_out != -1)
             adb_cond_wait(&usb->notify, &usb->lock);
         adb_mutex_unlock(&usb->lock);
 
-        while (1) {
+        while (true) {
             init_functionfs(usb);
 
             if (usb->control >= 0 && usb->bulk_in >= 0 && usb->bulk_out >= 0)