Remove trailing whitespace from tests from PR 83
diff --git a/tests/ffi/tests.cc b/tests/ffi/tests.cc
index 90538b9..6ca27db 100644
--- a/tests/ffi/tests.cc
+++ b/tests/ffi/tests.cc
@@ -102,8 +102,8 @@
   return std::unique_ptr<std::string>(new std::string("ok"));
 }
 
-std::unique_ptr<std::string> c_fail_return_string() { 
-  throw std::logic_error("logic error getting string"); 
+std::unique_ptr<std::string> c_fail_return_string() {
+  throw std::logic_error("logic error getting string");
 }
 
 extern "C" C *cxx_test_suite_get_unique_ptr() noexcept {