Merge pull request #5014 from comex/xx-invalid-offsetof

CMakeLists: disable -Winvalid-offsetof

src/CMakeLists.txt

@@ -66,6 +66,7 @@ else()
         -Wextra
         -Wmissing-declarations
         -Wno-attributes
+        -Wno-invalid-offsetof
         -Wno-unused-parameter
     )