Fix build warning

nyalldawson · nyalldawson · commit f39b7a0c4cdb · 2017-07-07T09:28:19.000+10:00
diff --git a/src/core/processing/qgsnativealgorithms.h b/src/core/processing/qgsnativealgorithms.h
@@ -147,7 +147,6 @@ class QgsBufferAlgorithm : public QgsProcessingAlgorithm
     QgsProperty mDynamicBufferProperty;
     QVariantMap mDynamicParams;
     double mDefaultBuffer;
-    const QgsProcessingParameterDefinition *mDistanceParamDef = nullptr;
     QgsExpressionContext mExpContext;
 };
 
