Formatter: Don't put a space in ObjC number literals like @+50

Before:
@ -4.5

Now:
@-4.5



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172095 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index 077c358..b55cad7 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -1402,11 +1402,10 @@
   verifyFormat("@throw");
   verifyFormat("@try");
 
-  // FIXME: Make the uncommented lines below pass.
   verifyFormat("@\"String\"");
   verifyFormat("@1");
-  //verifyFormat("@+4.8");
-  //verifyFormat("@-4");
+  verifyFormat("@+4.8");
+  verifyFormat("@-4");
   verifyFormat("@1LL");
   verifyFormat("@.5");
   verifyFormat("@'c'");