Minor refactor of unit tests

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>

tests/check.h

@@ -8,6 +8,8 @@
 
 #include "../lite.h"
 
+#define PRINT(args...) if (verbose) printf(args)
+
 #define fail_unless(test)						\
   do {									\
     if (!(test)) {							\

tests/pidfile.c

@@ -6,8 +6,6 @@
 
 #include "check.h"
 
-#define PRINT(args...) if (verbose) printf(args)
-
 extern char *__pidfile_name;
 extern char *__pidfile_path;