[processing] fix broken TauDEM support

Author: alexbruy

python/plugins/processing/algs/taudem/TauDEMAlgorithm.py

@@ -68,6 +68,8 @@ def defineCharacteristicsFromFile(self):
         self.cmdName = line
         line = lines.readline().strip('\n').strip()
         self.group = line
+
+        line = lines.readline().strip('\n').strip()
         while line != '':
             try:
                 line = line.strip('\n').strip()