Fix a typo that breaks the GCC build. Turns out that Clang isn't

diagnosing this code as an error when it should, so I've filed
http://llvm.org/bugs/show_bug.cgi?id=7325. 

llvm-svn: 105683

clang/lib/Analysis/PrintfFormatString.cpp

@@ -740,7 +740,7 @@ bool FormatSpecifier::fixType(QualType QT) {
     CS.setKind(ConversionSpecifier::dArg);
     HasAlternativeForm = 0;
   }
-  else if (QT->isUnsignedIntegerType) {
+  else if (QT->isUnsignedIntegerType()) {
     CS.setKind(ConversionSpecifier::uArg);
     HasAlternativeForm = 0;
   }