Fix to CMakeLists.txt to add debug flags to Debug build mode

CMakeLists.txt

@@ -164,7 +164,7 @@ if (BUILDING_WIN)
 	set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHsc -DNOMINMAX")
 else ()
 	set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fstack-protector")
-	set (CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}")
+	set (CMAKE_C_FLAGS_DEBUG " ${LIBZT_FLAGS_DEBUG} ${CMAKE_C_FLAGS_DEBUG}")
 	set (CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -fstack-protector")
 	set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${LIBZT_FLAGS} ${SILENCE} -O3 -Wall -Wextra -std=c++11")
 	set (CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} ${LIBZT_FLAGS_DEBUG} ${SILENCE} -std=c++11")