Rewrite unless/else as if/else

I believe it is generally accepted that unless/else is hard to read,
too many negations.

Author: fxn

activerecord/lib/active_record/connection_adapters/sqlite3/database_statements.rb

@@ -31,8 +31,14 @@ def internal_exec_query(sql, name = nil, binds = [], prepare: false, async: fals
 
           log(sql, name, binds, type_casted_binds, async: async) do |notification_payload|
             with_raw_connection do |conn|
-              # Don't cache statements if they are not prepared
-              unless prepare
+              if prepare
+                stmt = @statements[sql] ||= conn.prepare(sql)
+                cols = stmt.columns
+                stmt.reset!
+                stmt.bind_params(type_casted_binds)
+                records = stmt.to_a
+              else
+                # Don't cache statements if they are not prepared.
                 stmt = conn.prepare(sql)
                 begin
                   cols = stmt.columns
@@ -43,12 +49,6 @@ def internal_exec_query(sql, name = nil, binds = [], prepare: false, async: fals
                 ensure
                   stmt.close
                 end
-              else
-                stmt = @statements[sql] ||= conn.prepare(sql)
-                cols = stmt.columns
-                stmt.reset!
-                stmt.bind_params(type_casted_binds)
-                records = stmt.to_a
               end
               verified!