[clang][Interp][NFC] Fix comment typos

Author: tbaederr

clang/lib/AST/Interp/Interp.h

@@ -1878,7 +1878,7 @@ inline bool ArrayElemPtrPop(InterpState &S, CodePtr OpPC) {
   return NarrowPtr(S, OpPC);
 }
 
-/// Just takes a pointer and checks if its' an incomplete
+/// Just takes a pointer and checks if it's an incomplete
 /// array type.
 inline bool ArrayDecay(InterpState &S, CodePtr OpPC) {
   const Pointer &Ptr = S.Stk.pop<Pointer>();

clang/lib/AST/Interp/Pointer.h

@@ -339,7 +339,7 @@ class Pointer {
   }
   /// Checks if a structure is a base class.
   bool isBaseClass() const { return isField() && getInlineDesc()->IsBase; }
-  /// Checks if the pointer pointers to a dummy value.
+  /// Checks if the pointer points to a dummy value.
   bool isDummy() const {
     if (!Pointee)
       return false;