[LNT] Simplify population of alldata in lF_oneway

Summary: Use a simpler iteration to populate alldata list in lF_oneway.

Reviewers: cmatthews, hubert.reinterpretcast, kristof.beyls

Reviewed By: hubert.reinterpretcast

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D67959

llvm-svn: 372822

Author: Thomas Preud'homme

lnt/external/stats/stats.py

@@ -1563,8 +1563,8 @@ def lF_oneway(*lists):
 """
     a = len(lists)           # ANOVA on 'a' groups, each in it's own list
     alldata = []
-    for i in range(len(lists)):
-        alldata = alldata + lists[i]
+    for l in lists:
+        alldata.extend(l)
     alldata = N.array(alldata)
     bign = len(alldata)
     sstot = ass(alldata)-(asquare_of_sums(alldata)/float(bign))