tests: move include of tests/tests.h outside of extern "C"

tests/unit/plugins/trigger/test-trigger.cpp

@@ -21,6 +21,8 @@
 
 #include "CppUTest/TestHarness.h"
 
+#include "tests/tests.h"
+
 extern "C"
 {
 #include <stdio.h>
@@ -30,8 +32,6 @@ extern "C"
 #include "src/plugins/trigger/trigger.h"
 }
 
-#include "tests/tests.h"
-
 #define WEE_CHECK_REGEX_SPLIT(__rc, __ret_regex_count, __str_regex)     \
     trigger_regex_free (&regex_count, &regex);                          \
     LONGS_EQUAL(__rc, trigger_regex_split (__str_regex,                 \