...than 92c8d74c "CppCheck : reduce variables
scope" did, to make it clear that it is OK to move these into the for loop:
the values these variables receive (when bCreateTextureCoordinates is true) are
only relevant for each immediately following call to impAddInBetweenFill, and
are only actually used inside impAddInBetweenFill when bCreateTextureCoordinates
(which is also passed into the call) is true.

Change-Id: Ib9e315d80a04736fb6b49144c8f09239ac351c7f