[ValueTracking] Only check up to CtxIter in willNotFreeBetween.

Only check up to CtxI (CtxIter) when checking for calls that may free
in CtxI's block.

Missed update in #167965.

This should be NFC, as all current callers pass a terminator that is
guaranteed to not free as CtxI

Author: fhahn

llvm/lib/Analysis/ValueTracking.cpp

@@ -729,7 +729,7 @@ bool llvm::willNotFreeBetween(const Instruction *Assume,
     if (CtxBB->getSinglePredecessor() != AssumeBB)
       return false;
 
-    if (!hasNoFreeCalls(make_range(CtxBB->begin(), CtxBB->end())))
+    if (!hasNoFreeCalls(make_range(CtxBB->begin(), CtxIter)))
       return false;
 
     CtxIter = AssumeBB->end();