[5266] Added *.h from *.h.in to distclean

src/lib/dhcpsrv/tests/Makefile.am

@@ -15,6 +15,7 @@ AM_LDFLAGS = -static
 endif
 
 CLEANFILES = *.gcno *.gcda
+DISTCLEANFILES = test_libraries.h
 
 TESTS_ENVIRONMENT = \
         $(LIBTOOL) --mode=execute $(VALGRIND_COMMAND)