Remove extra slashes from zip path in openrecovery

TWFunc::Get_Path() returns a path with a trailing slash and the substr
method is returning a string with a leading slash, so we don't need to
specify additional slashes for wholePath in Locate_Zip_File().

Also, put 'value' readout to log on its own line if it exists.

Change-Id: I2a4db6dbde5552f5a803eabb0599fd983d683fca