fix #1001 introduced with r8233

git-svn-id: http://svn.osgeo.org/qgis/trunk@8248 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: jef

src/providers/postgres/qgspostgresprovider.cpp

@@ -1272,7 +1272,7 @@ bool QgsPostgresProvider::uniqueData(QString schemaName,
 
   PGresult* unique = PQexec(connection, sql.toUtf8());
 
-  if (PQntuples(unique)==1 && QString::fromUtf8(PQgetvalue(unique, 0, 0)).startsWith("t") == 0)
+  if (PQntuples(unique)==1 && QString::fromUtf8(PQgetvalue(unique, 0, 0)).startsWith("t"))
     isUnique = true;
 
   PQclear(unique);