tree-optimization/114297 - SLP reduction with early break fix

tree-optimization/114297 - SLP reduction with early break fix

The following makes sure to pass in the SLP node for the live stmts
we are generating the reduction epilogue for to
vect_create_epilog_for_reduction.  This follows the previous fix for
the non-SLP path.

	PR tree-optimization/114297
	* tree-vect-loop.cc (vectorizable_live_operation): Pass in the
	live stmts SLP node to vect_create_epilog_for_reduction.

	* gcc.dg/vect/vect-early-break_123-pr114297.c: New testcase.