Dlib compilation config fixed

Dlib usually compiles as a library. So there is some checks for
ODR and that version used is the same across compilation units.
Unfortunately, there is a bug where ODR is checked regardless of
check configs. Fixed.

Author: topin89

benchmarks/dlib/config.h

@@ -7,7 +7,7 @@
 // always off.  If you don't define one of these two macros then DLIB_ASSERT will toggle
 // automatically depending on the state of certain other macros, which is not what you want
 // when creating a shared library.
-#define ENABLE_ASSERTS       // asserts always enabled 
+// #define ENABLE_ASSERTS       // asserts always enabled 
 /* #undef DLIB_DISABLE_ASSERTS */
 
 /* #undef DLIB_ISO_CPP_ONLY */
@@ -30,5 +30,5 @@
 
 // This variable allows dlib/test_for_odr_violations.h to catch people who mistakenly use
 // headers from one version of dlib with a compiled dlib binary from a different dlib version.
-#define DLIB_CHECK_FOR_VERSION_MISMATCH DLIB_VERSION_MISMATCH_CHECK__EXPECTED_VERSION_19_21_99
+// #define DLIB_CHECK_FOR_VERSION_MISMATCH DLIB_VERSION_MISMATCH_CHECK__EXPECTED_VERSION_19_21_99
 

benchmarks/dlib/test_for_odr_violations.h

@@ -19,9 +19,6 @@ extern "C"
 #ifdef ENABLE_ASSERTS
     const extern int USER_ERROR__inconsistent_build_configuration__see_dlib_faq_1;
     const int DLIB_NO_WARN_UNUSED dlib_check_assert_helper_variable = USER_ERROR__inconsistent_build_configuration__see_dlib_faq_1;
-#else
-    const extern int USER_ERROR__inconsistent_build_configuration__see_dlib_faq_1_;
-    const int DLIB_NO_WARN_UNUSED dlib_check_assert_helper_variable = USER_ERROR__inconsistent_build_configuration__see_dlib_faq_1_;
 #endif