[AddressLowering] Rewrite partial_apply uses.

Use the CallArgRewriter to rewrite uses by partial_apply insts just as
uses by apply insts, etc., are rewritten.

Author: nate-chandler

lib/SILOptimizer/Mandatory/AddressLowering.cpp

@@ -2599,6 +2599,10 @@ class UseRewriter : SILInstructionVisitor<UseRewriter> {
     CallArgRewriter(applyInst, pass).rewriteIndirectArgument(use);
   }
 
+  void visitPartialApplyInst(PartialApplyInst *pai) {
+    CallArgRewriter(pai, pass).rewriteIndirectArgument(use);
+  }
+
   void visitBeginApplyInst(BeginApplyInst *bai) {
     CallArgRewriter(bai, pass).rewriteIndirectArgument(use);
   }