[LNT] Python 3 support: Get next element with next builtin

Use next() builtin rather than the .next() method to retrieve the next
element of an iterator since the latter does not exist in Python 3.
next() builtin was introduced in Python 2.6. This was produced by
running futurize's stage1 libfuturize.fixes.fix_next_call.

Reviewers: cmatthews, hubert.reinterpretcast, kristof.beyls

Reviewed By: hubert.reinterpretcast

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D67812

llvm-svn: 372552

Author: Thomas Preud'homme

lnt/testing/profile/profilev2impl.py

@@ -541,7 +541,7 @@ def getCodeForFunction(self, fname):
         address_gen = self.line_addresses.extractForFunction(fname)
         text_gen = self.line_text.extractForFunction(fname)
         for n in xrange(f['length']):
-            yield (counter_gen.next(), address_gen.next(), text_gen.next())
+            yield (next(counter_gen), next(address_gen), next(text_gen))
 
     def copy(self, counter_name_pool, line_counters,
              line_addresses, line_text):

lnt/tests/nt.py

@@ -773,7 +773,7 @@ def append_to_sample_keys(tup):
     reader_it = iter(csv.reader(report_file))
 
     # Get the header.
-    header = reader_it.next()
+    header = next(reader_it)
     if header[0] != 'Program':
         fatal('unexpected report file, missing header')