[clang][NFC] Fix typo in the name of a note

[ldionne]

Summary

r306722 introduced a new note called note_silence_unligned_allocation_unavailable
where I believe what was meant is note_silence_aligned_allocation_unavailable.

[ahatanak]

Thanks. Yes, it's a typo.

cfe/trunk/include/clang/Basic/DiagnosticSemaKinds.td

def warn_using_directive_in_header : Warning<
   InGroup<HeaderHygiene>, DefaultIgnore;
 def warn_overaligned_type : Warning<
   "type %0 requires %1 bytes of alignment and the default allocator only "
   "guarantees %2 bytes">,
   InGroup<OveralignedType>, DefaultIgnore;
 def err_aligned_allocation_unavailable : Error<
   "aligned %select{allocation|deallocation}0 function of type '%1' is only "
   "available on %2 %3 or newer">;
-def note_silence_unligned_allocation_unavailable : Note<
+def note_silence_aligned_allocation_unavailable : Note<
   "if you supply your own aligned allocation functions, use "
   "-faligned-allocation to silence this diagnostic">;
 
 def err_conditional_void_nonvoid : Error<
   "%select{left|right}1 operand to ? is void, but %select{right|left}1 operand "
   "is of type %0">;
 def err_conditional_ambiguous : Error<
   "conditional expression is ambiguous; "

cfe/trunk/lib/Sema/SemaExprCXX.cpp

static void diagnoseUnavailableAlignedAllocation(const FunctionDecl &FD,
   if (FD.isReplaceableGlobalAllocationFunction(&IsAligned) && IsAligned) {
     const llvm::Triple &T = S.getASTContext().getTargetInfo().getTriple();
     StringRef OSName = AvailabilityAttr::getPlatformNameSourceSpelling(
         S.getASTContext().getTargetInfo().getPlatformName());
 
     S.Diag(Loc, diag::err_aligned_allocation_unavailable)
         << IsDelete << FD.getType().getAsString() << OSName
         << alignedAllocMinVersion(T.getOS()).getAsString();
-    S.Diag(Loc, diag::note_silence_unligned_allocation_unavailable);
+    S.Diag(Loc, diag::note_silence_aligned_allocation_unavailable);
   }
 }
 
 ExprResult
 Sema::BuildCXXNew(SourceRange Range, bool UseGlobal,
                   SourceLocation PlacementLParen,
                   MultiExprArg PlacementArgs,
                   SourceLocation PlacementRParen,