Make the comments in DistrhoDefines.h consistent

Signed-off-by: falkTX <falktx@falktx.com>

distrho/src/DistrhoDefines.h

@@ -58,8 +58,8 @@
 #elif __cplusplus >= 201103L || (defined(__GNUC__) && defined(__GXX_EXPERIMENTAL_CXX0X__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 405) || __has_extension(cxx_noexcept) || (defined(_MSC_VER) && _MSVC_LANG >= 201103L)
 # define DISTRHO_PROPER_CPP11_SUPPORT
 # if (defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) < 407 && ! defined(__clang__)) || (defined(__clang__) && ! __has_extension(cxx_override_control))
-#  define override // gcc4.7+ only
-#  define final    // gcc4.7+ only
+#  define override /* gcc4.7+ only */
+#  define final    /* gcc4.7+ only */
 # endif
 #endif