Fix use of variable before its lifetime begins

This has been broken with 48314f2524 "improve
function-local statics in basic..cui" (and has been found with a new plugin to
be commited).

Change-Id: I518360e3273af9db4a8560a89bc8a789410c8033
Reviewed-on: https://gerrit.libreoffice.org/70875
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

connectivity/source/drivers/firebird/DatabaseMetaData.cxx

@@ -976,7 +976,7 @@ uno::Reference< XResultSet > SAL_CALL ODatabaseMetaData::getTypeInfo()
         aRow[12] = new ORowSetValueDecorator(false); // Autoincrement
         aRow[14] = ODatabaseMetaDataResultSet::get0Value(); // Minimum scale
         aRow[15] = ODatabaseMetaDataResultSet::get0Value(); // Max scale
-        aResults.push_back(aRow);
+        tmp.push_back(aRow);
 
         // SQL_TYPE_DATE
         aRow[1] = new ORowSetValueDecorator(OUString("DATE"));