allow for malformed imagesizes.txt
allow for malformed imagesizes.txt

Some builds have blank values for max image sizes; ignore these lines.

xorware/android_build,xorware/android_build,xorware/android_build,Hybrid-Power/startsync,pranav01/platform_manifest,ND-3500/platform_manifest,knone1/platform_manifest,hagar006/platform_manifest,xorware/android_build,xorware/android_build,fallouttester/platform_manifest,RR-msm7x30/platform_manifest,see4ri/lolili