buildhistory-collect-srcrevs: Fix multiple SRCREV definitions

Fixed copy & paste error causing error when extracting SRCREV
for packages containing multiple SRCREV definitons.

(From OE-Core rev: abcb6efb6af2b2f31a12c373f8fcabce71d305c0)

Signed-off-by: Tobias Hagelborn <tobias.hagelborn@axis.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

scripts/buildhistory-collect-srcrevs

@@ -101,7 +101,7 @@ def main():
                 for name, value in srcrevs.items():
                     orig = orig_srcrevs.get(name, orig_srcrev)
                     if options.reportall or value != orig:
-                        all_srcrevs[curdir].append((pn, name, srcrev))
+                        all_srcrevs[curdir].append((pn, name, value))
 
     for curdir, srcrevs in sorted(all_srcrevs.items()):
         if srcrevs: