standardize brace placement in struct definitions

In a struct definitions, unlike functions, the prevailing style is for
the opening brace to go on the same line as the struct name, like so:

 struct foo {
	int bar;
	char *baz;
 };

Indeed, grepping for 'struct [a-z_]* {$' yields about 5 times as many
matches as 'struct [a-z_]*$'.

Linus sayeth:

 Heretic people all over the world have claimed that this inconsistency
 is ...  well ...  inconsistent, but all right-thinking people know that
 (a) K&R are _right_ and (b) K&R are right.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

string-list.h

@@ -5,8 +5,7 @@ struct string_list_item {
 	char *string;
 	void *util;
 };
-struct string_list
-{
+struct string_list {
 	struct string_list_item *items;
 	unsigned int nr, alloc;
 	unsigned int strdup_strings:1;