util-internal: fix __func__ redefinition (netbsd) ==> netbsd: In file included from ../listener.c:57:0: ==> netbsd: ../util-internal.h:58:0: warning: "__func__" redefined [enabled by default] ==> netbsd: #define __func__ EVENT____func__ ==> netbsd: ^ ==> netbsd: In file included from /usr/include/amd64/types.h:39:0, ==> netbsd: from /usr/include/sys/types.h:45, ==> netbsd: from ../listener.c:30: ==> netbsd: /usr/include/sys/cdefs.h:394:0: note: this is the location of the previous definition ==> netbsd: #define __func__ __PRETTY_FUNCTION__