[clang-tidy] Cleaning namespaces to be more consistant across checkers.

Summary:
The goal of the patch is to bring checkers in their appropriate namespace.
This path doesn't change any behavior.

Reviewers: alexfh

Subscribers: cfe-commits

Differential Revision: http://reviews.llvm.org/D19811

llvm-svn: 268264
diff --git a/clang-tools-extra/clang-tidy/misc/NoexceptMoveConstructorCheck.cpp b/clang-tools-extra/clang-tidy/misc/NoexceptMoveConstructorCheck.cpp
index 1a22e17..769efe4 100644
--- a/clang-tools-extra/clang-tidy/misc/NoexceptMoveConstructorCheck.cpp
+++ b/clang-tools-extra/clang-tidy/misc/NoexceptMoveConstructorCheck.cpp
@@ -15,6 +15,7 @@
 
 namespace clang {
 namespace tidy {
+namespace misc {
 
 void NoexceptMoveConstructorCheck::registerMatchers(MatchFinder *Finder) {
   // Only register the matchers for C++11; the functionality currently does not
@@ -67,6 +68,7 @@
   }
 }
 
+} // namespace misc
 } // namespace tidy
 } // namespace clang