fix typos in comment; NFC

llvm-svn: 241174

llvm/lib/Target/X86/X86ISelLowering.h

@@ -642,9 +642,8 @@ namespace llvm {
     /// legal as the hook is used before type legalization.
     bool isSafeMemOpType(MVT VT) const override;
 
-    /// Returns true if the target allows
-    /// unaligned memory accesses. of the specified type. Returns whether it
-    /// is "fast" by reference in the second argument.
+    /// Returns true if the target allows unaligned memory accesses of the
+    /// specified type. Returns whether it is "fast" in the last argument.
     bool allowsMisalignedMemoryAccesses(EVT VT, unsigned AS, unsigned Align,
                                        bool *Fast) const override;