Shorten some excessively long lines of CMake

The line length enforcement in ament_lint_cmake has been broken for some
time, but will be fixed by ament/ament_lint#236. This change brings this
package into compliance with a 120 column limit.

Signed-off-by: Scott K Logan <logans@cottsay.net>

rmw_implementation/CMakeLists.txt

@@ -83,7 +83,8 @@ else()
 
     find_package(performance_test_fixture REQUIRED)
     # Give cppcheck hints about macro definitions coming from outside this package
-    get_target_property(ament_cmake_cppcheck_ADDITIONAL_INCLUDE_DIRS performance_test_fixture::performance_test_fixture INTERFACE_INCLUDE_DIRECTORIES)
+    get_target_property(ament_cmake_cppcheck_ADDITIONAL_INCLUDE_DIRS performance_test_fixture::performance_test_fixture
+      INTERFACE_INCLUDE_DIRECTORIES)
 
     macro(benchmark_rmws)
       find_package(${rmw_implementation} REQUIRED)