Fix for uiautomator arguments that contain spaces

Change-Id: I5ca631ce426ce4e68bfbfcaa65c8687a207b966c
diff --git a/uiautomator/cmds/uiautomator/uiautomator b/uiautomator/cmds/uiautomator/uiautomator
index 9aec2c4..b3213a5 100755
--- a/uiautomator/cmds/uiautomator/uiautomator
+++ b/uiautomator/cmds/uiautomator/uiautomator
@@ -101,7 +101,7 @@
       trap "" HUP
       shift
     else
-      args="${args} ${1}"
+      args+=("${1}")
       shift
     fi
   done