schema: don't use 'create index if not exists' syntax because mysql doesn't support it

Author: Andrew Dolgov

sql/mysql/migrations/147.sql

@@ -1,2 +1,2 @@
-create fulltext index if not exists ttrss_entries_title_search_idx on ttrss_entries(title);
-create fulltext index if not exists ttrss_entries_combined_search_idx on ttrss_entries(title, content);
+create fulltext index ttrss_entries_title_search_idx on ttrss_entries(title);
+create fulltext index ttrss_entries_combined_search_idx on ttrss_entries(title, content);

sql/mysql/schema.sql

@@ -169,8 +169,8 @@ create table ttrss_entries (id integer not null primary key auto_increment,
 create index ttrss_entries_date_entered_index on ttrss_entries(date_entered);
 create index ttrss_entries_updated_idx on ttrss_entries(updated);
 
-create fulltext index if not exists ttrss_entries_title_search_idx on ttrss_entries(title);
-create fulltext index if not exists ttrss_entries_combined_search_idx on ttrss_entries(title, content);
+create fulltext index ttrss_entries_title_search_idx on ttrss_entries(title);
+create fulltext index ttrss_entries_combined_search_idx on ttrss_entries(title, content);
 
 create table ttrss_user_entries (
 	int_id integer not null primary key auto_increment,