Tweaked comment.

Matched the comment on the definition of NonLocalAccessBlocks::compute()
to that on the declaration.

Author: nate-chandler

include/swift/SILOptimizer/Utils/CanonicalOSSALifetime.h

@@ -190,7 +190,7 @@ class CanonicalizeOSSALifetime {
   bool pruneDebug;
 
   NonLocalAccessBlockAnalysis *accessBlockAnalysis;
-  // Lazilly initialize accessBlocks only when
+  // Lazily initialize accessBlocks only when
   // extendLivenessThroughOverlappingAccess is invoked.
   NonLocalAccessBlocks *accessBlocks = nullptr;
 

lib/SILOptimizer/Analysis/NonLocalAccessBlockAnalysis.cpp

@@ -15,7 +15,8 @@
 
 using namespace swift;
 
-// Populate this->accessBlocks with
+// Populate this->accessBlocks with all blocks containing a non-local
+// end_access.
 void NonLocalAccessBlocks::compute() {
   for (SILBasicBlock &block : *this->function) {
     for (SILInstruction &inst : block) {