test: convert message_native_types to gtest

Change-Id: I8aa9e996505d3083ff5650c3fa5107d4143ff482
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/test/Makefile.am b/test/Makefile.am
index af70c63..0e66587 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -22,6 +22,7 @@
 
 check_PROGRAMS += message_native_types
 message_native_types_SOURCES = message/native_types.cpp
+message_native_types_LDFLAGS = $(gtest_ldflags)
 
 check_PROGRAMS += message_types
 message_types_SOURCES = message/types.cpp