Corrected another similar bit of code causing a segfault. It is

not known, though, why the flag is set indicating valid planes
in the clientdata record when there in fact is none.  That seems
to be the underlying bug.

cif/CIFrdcl.c

@@ -1497,6 +1497,10 @@ CIFReadCellCleanup(filetype)
 
 	    UndoDisable();
 
+	    /* cifplanes should be valid, but don't crash magic if not */
+	    if (cifplanes != (ClientData)CLIENTDEFAULT)
+	    {
+
 		for (pNum = 0; pNum < MAXCIFRLAYERS; pNum++)
 		{
 		    if (cifplanes[pNum] != NULL)
@@ -1506,6 +1510,7 @@ CIFReadCellCleanup(filetype)
 		    }
 		}
 		freeMagic((char *)def->cd_client);
+	    }
 	    def->cd_client = (ClientData)CLIENTDEFAULT;
 
 #if 0