MonetDB: Jul2012 - fix crash in BATconst

[Niels Nes]

Changeset: 2ee642457e66 for MonetDB
URL: http://dev.monetdb.org/hg/MonetDB?cmd=changeset;node=2ee642457e66
Modified Files:
        gdk/gdk_batop.mx
Branch: Jul2012
Log Message:

fix crash in BATconst


diffs (15 lines):

diff --git a/gdk/gdk_batop.mx b/gdk/gdk_batop.mx
--- a/gdk/gdk_batop.mx
+++ b/gdk/gdk_batop.mx
@@ -2763,8 +2763,10 @@ BATconst(BAT *b, int tailtype, const voi
                                bn = VIEWcreate(b, bt);
                                BBPunfix(bt->batCacheid);
                        }
-                       if (b != o)
+                       if (b != o) {
                                BBPunfix(b->batCacheid);
+                               b = o;
+                       }
                }
        } else {
                if (tailtype == TYPE_bat) {
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