fixed typo

libDCS/parameterOptimizer.py

@@ -253,7 +253,7 @@ def find(args):
         total = 0
         for j in range(nReps):
             print("[ info ][po] Testing %i %i..." % (v1range[xtest1], v2range[ytest1]))
-            process = subprocess.Popen(cmd.split(), stdout=subprocess.PIPE, stderr=subprocess.PIPE))
+            process = subprocess.Popen(cmd.split(), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
             output, error = process.communicate()
             enMaskPath = args.basepath + "/data/optimizer/last_scan/" + chipName + "_EnMask.json"