more C standard compat fixes from Dan Fandrich

function                                             old     new   delta
docolon                                              207     204      -3

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

coreutils/split.c

@@ -20,7 +20,7 @@ static const struct suffix_mult split_suffices[] = {
 #if ENABLE_FEATURE_SPLIT_FANCY
 	{ "g", 1024*1024*1024 },
 #endif
-	{ }
+	{ "", 0 }
 };
 
 /* Increment the suffix part of the filename.