Fix typo in InstOptUtils.cpp

addres -> address

Author: Ikko Ashimine

lib/SILOptimizer/Utils/InstOptUtils.cpp

@@ -1307,7 +1307,7 @@ void swift::replaceLoadSequence(SILInstruction *inst, SILValue value) {
     return;
   }
 
-  // Incidental uses of an addres are meaningless with regard to the loaded
+  // Incidental uses of an address are meaningless with regard to the loaded
   // value.
   if (isIncidentalUse(inst) || isa<BeginUnpairedAccessInst>(inst))
     return;