Dear all,

when checking the SOURCE and SHAPE arguments to the RESHAPE
intrinsic, for absent PAD argument we failed to handle the case
when SHAPE was a parameter.

Fortunately, the proper check was already there, and the code
just needs some tweaking, as well as one of the testcases.

Regtested on x86_64-pc-linux-gnu.  OK for mainline?

Thanks,
Harald