cppcheck: Exception should be caught by reference

Change-Id: Ib92122311186da16fbef9441560bb7a013072e76

connectivity/source/drivers/firebird/Blob.cxx

@@ -112,7 +112,7 @@ void SAL_CALL Blob::disposing(void)
     {
          closeBlob();
     }
-    catch (SQLException e)
+    catch (SQLException &e)
     {
         // we cannot throw any exceptions here...
         SAL_WARN("connectivity.firebird", "isc_close_blob failed\n" <<
@@ -256,4 +256,4 @@ void SAL_CALL Blob::closeInput()
     closeBlob();
 }
 
-/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
\ No newline at end of file
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */