Fixing a bug when changing categories we would get a bad unit selected

diff --git a/src/gonvert_qt.py b/src/gonvert_qt.py
index acf25d9..d47b1b8 100755 (executable)
--- a/src/gonvert_qt.py
+++ b/src/gonvert_qt.py
@@ -712,6 +712,8 @@ class QuickConvert(object):
                        self._window.showNormal()
 
        def select_category(self, categoryName):
+               self._inputUnitName = ""
+               self._outputUnitName = ""
                self._inputUnitValue.setText("")
                self._inputUnitSymbol.setText("")
                self._inputView.clear()