CMake: disable ASan on macOS

Ref: https://stackoverflow.com/questions/64126942/malloc-nano-zone-abandoned-due-to-inability-to-preallocate-reserved-vm-space

CMakeLists.txt

@@ -116,7 +116,7 @@ if(APPLE AND DEFINED ENV{HOMEBREW_PREFIX})
 endif()
 
 set(FASTFETCH_FLAGS_DEBUG "-fno-omit-frame-pointer")
-if(NOT WIN32)
+if(NOT WIN32 AND NOT APPLE)
     set(FASTFETCH_FLAGS_DEBUG "${FASTFETCH_FLAGS_DEBUG} -fsanitize=address")
 endif()
 set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} ${FASTFETCH_FLAGS_DEBUG}")