Suppress Sanitization Warning on Linux When Memory Leak Detection is …

…Disabled

There is a warning in the `CppUTestConfig.h` on Linux platforms when building
with ASAN. The warning says to disable memory leak detection in order to get
rid of the warning with `-DCPPUTEST_MEM_LEAK_DETECTION_DISABLED`. However,
providing said define does not get rid of the warning. This prevents
compilation on Linux with ASAN + `-Werror`.

include/CppUTest/CppUTestConfig.h

@@ -146,7 +146,7 @@
 #endif
 
 #if CPPUTEST_SANITIZE_ADDRESS
-  #if defined(__linux__) && defined(__clang__) && CPPUTEST_USE_STD_CPP_LIB
+  #if defined(__linux__) && defined(__clang__) && CPPUTEST_USE_STD_CPP_LIB && CPPUTEST_USE_MEM_LEAK_DETECTION
     #warning Compiling with Address Sanitizer with clang on linux may cause duplicate symbols for operator new. Turning off memory leak detection. Compile with -DCPPUTEST_MEM_LEAK_DETECTION_DISABLED to get rid of this warning.
   #endif
   #define CPPUTEST_DO_NOT_SANITIZE_ADDRESS __attribute__((no_sanitize_address))