Avoid redundant conditions

While `if (i <= 0) ... else if (i > 0) ...` is technically equivalent to
`if (i <= 0) ... else ...`, the latter is vastly easier to read because
it avoids writing out a condition that is unnecessary. Let's drop such
unnecessary conditions.

Pointed out by CodeQL.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

help.c

@@ -214,7 +214,7 @@ void exclude_cmds(struct cmdnames *cmds, struct cmdnames *excludes)
 		else if (cmp == 0) {
 			ei++;
 			free(cmds->names[ci++]);
-		} else if (cmp > 0)
+		} else
 			ei++;
 	}