Ensure all files have trailing new-lines and enforce with clang warning

renderdoc/common/globalconfig.h

@@ -219,4 +219,4 @@ enum
 // otherwise, enable them in development builds
 #define ENABLE_UNIT_TESTS RDOC_DEVEL
 
-#endif
+#endif

renderdoc/common/threading_tests.cpp

@@ -71,4 +71,4 @@ TEST_CASE("Test spin lock", "[threading]")
   CHECK(finalValue == value);
 }
 
-#endif    // ENABLED(ENABLE_UNIT_TESTS)
+#endif    // ENABLED(ENABLE_UNIT_TESTS)