[Gardening] Addressed a couple typos.

Author: nate-chandler

include/swift/SIL/MemoryLocations.h

@@ -238,14 +238,14 @@ class MemoryLocations {
     addr2LocIdx[projection] = locIdx;
   }
 
-  /// Sets the location bits os \p addr in \p bits, if \p addr is associated
+  /// Sets the location bits of \p addr in \p bits, if \p addr is associated
   /// with a location.
   void setBits(Bits &bits, SILValue addr) const {
     if (auto *loc = getLocation(addr))
       bits |= loc->subLocations;
   }
 
-  /// Clears the location bits os \p addr in \p bits, if \p addr is associated
+  /// Clears the location bits of \p addr in \p bits, if \p addr is associated
   /// with a location.
   void clearBits(Bits &bits, SILValue addr) const {
     if (auto *loc = getLocation(addr))
@@ -307,7 +307,7 @@ class MemoryLocations {
                                       SubLocationMap &subLocationMap);
 
   /// Helper function called by analyzeLocation to create a sub-location for
-  /// and address projection and check all of its uses.
+  /// an address projection and check all of its uses.
   bool analyzeAddrProjection(
     SingleValueInstruction *projection, unsigned parentLocIdx,unsigned fieldNr,
     SmallVectorImpl<SILValue> &collectedVals, SubLocationMap &subLocationMap);