remove std::make_pair

make_pair is an old C++98 function that can be replaced by modern
shorter constructs.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

src/sticker/Database.cxx

@@ -163,7 +163,7 @@ StickerDatabase::ListValues(std::map<std::string, std::string> &table,
 	ExecuteForEach(s, [s, &table](){
 		const char *name = (const char *)sqlite3_column_text(s, 0);
 		const char *value = (const char *)sqlite3_column_text(s, 1);
-		table.insert(std::make_pair(name, value));
+		table.emplace(name, value);
 	});
 }