Translation fix

jef-n · jef-n · commit cb8b8f413e2c · 2018-08-11T00:25:28.000+02:00
(cherry picked from commit ac63b8e)
diff --git a/python/plugins/processing/algs/qgis/DeleteColumn.py b/python/plugins/processing/algs/qgis/DeleteColumn.py
@@ -25,6 +25,8 @@
 
 __revision__ = '$Format:%H$'
 
+from qgis.PyQt.QtCore import QCoreApplication
+
 from qgis.core import (QgsProcessingParameterField,
                        QgsProcessing,
                        QgsProcessingFeatureSource)
@@ -74,7 +76,7 @@ def prepareAlgorithm(self, parameters, context, feedback):
             for f in self.fields_to_delete:
                 index = source.fields().lookupField(f)
                 if index < 0:
-                    feedback.pushInfo(self.tr('Field “{}” does not exist in input layer').format(f))
+                    feedback.pushInfo(QCoreApplication.translate('DeleteColumn', 'Field “{}” does not exist in input layer').format(f))
 
         return super().prepareAlgorithm(parameters, context, feedback)
 
