fix help opening

Author: alexbruy

python/plugins/processing/gui/AlgorithmDialogBase.py

@@ -105,12 +105,12 @@ def __init__(self, alg):
         self.splitterState = self.splitter.saveState()
         self.splitterChanged(0, 0)
 
-        self.setWindowTitle(self.alg.displayName())
-
         self.executed = False
         self.mainWidget = None
         self.alg = alg
 
+        self.setWindowTitle(self.alg.displayName())
+
         # Rename OK button to Run
         self.btnRun = self.buttonBox.button(QDialogButtonBox.Ok)
         self.btnRun.setText(self.tr('Run'))
@@ -246,7 +246,7 @@ def splitterChanged(self, pos, index):
 
     def openHelp(self):
         algHelp = self.alg.helpUrl()
-        if algHelp is not None:
+        if algHelp not in [None, ""]:
             webbrowser.open(algHelp)
 
     def _saveGeometry(self):