perl-module: Add "!= NULL" to assignment used as condition.

Suppresses a "clang" warning.

Reported-by: Jeremy Lavergne <jeremy@lavergne.gotdns.org>

diff --git a/perl-module/PSPP.xs b/perl-module/PSPP.xs
index 77b7682b3e29c96178034a60797887c78c2dd208..d2b2c58c4c91396ca158d4840e796e468c9635d1 100644 (file)
--- a/perl-module/PSPP.xs
+++ b/perl-module/PSPP.xs
@@ -749,7 +749,7 @@ get_next_case (sfr)
 PPCODE:
  struct ccase *c;
 
- if (c = casereader_read (sfr->reader))
+ if ((c = casereader_read (sfr->reader)) != NULL)
  {
   int v;