Merge pull request #631 from mslehto/illumos-warning

lib/srdb1: fix compiler warning

lib/srdb1/db_ut.c

@@ -53,8 +53,8 @@
 #ifndef __OS_solaris
 	#undef _XOPEN_SOURCE
 	#undef _XOPEN_SOURCE_EXTENDED
-#else
-	#undef _XOPEN_SOURCE_EXTENDED 1   /* solaris */
+#else  /* solaris */
+	#undef _XOPEN_SOURCE_EXTENDED
 #endif
 
 #include <limits.h>