Fix condition in merge-to-branch.sh

tools/merge-to-branch.sh

 #!/bin/bash
 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
@@ skipping 100 matching lines @@
   let MIN_EXPECTED_ARGS=2-$REVERT_FROM_BLEEDING_EDGE
   if [ ${#@} -lt $MIN_EXPECTED_ARGS ] ; then
     if [ -z "$EXTRA_PATCH" ] ; then
       die "Either a patch file or revision numbers must be specified"
     fi
     if [ -z "$NEW_COMMIT_MSG" ] ; then
       die "You must specify a merge comment if no patches are specified"
     fi
   fi
   echo ">>> Step $CURRENT_STEP: Preparation"
-  if [ $REVERT_FROM_BLEEDING_EDGE==1 ] ; then
+  if [ $REVERT_FROM_BLEEDING_EDGE -eq 1 ] ; then
     MERGE_TO_BRANCH="bleeding_edge"
   else
     MERGE_TO_BRANCH=$1
     [[ -n "$MERGE_TO_BRANCH" ]] || die "Please specify a branch to merge to"
     shift
   fi
   persist "MERGE_TO_BRANCH"
   common_prepare
 fi
 
@@ skipping 155 matching lines @@
   restore_version_if_unset "NEW"
   common_cleanup
   if [ $REVERT_FROM_BLEEDING_EDGE==0 ] ; then
     echo "*** SUMMARY ***"
     echo "version: $NEWMAJOR.$NEWMINOR.$NEWBUILD.$NEWPATCH"
     echo "branch: $TO_URL"
     echo "svn revision: $SVN_REVISION"
     [[ -n "$REVISION_LIST" ]] && echo "patches:$REVISION_LIST"
   fi
 fi