Skip userdata.img if no size is provided when building images from target files
Skip userdata.img if no size is provided when building images from target files

Change-Id: Iab5c510fcc7608c4b109781e6595ab8964f4c543

xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build,xorware/android_build