[automerger] Fix crash during cursor moving on BiDi text am: 95218ce7ea am: b7a2d47ec2 skipped: 723f13d01f am: 04c7154fd9 am: 65082f8f5b am: 74ffd2bc55 am: f7f008f573 am: 7693ce7eaf

Change-Id: Ic311029be8ab99f4aaae526d980da0f2436c5459