Loop in gnc_find_split_in_trans_by_memo

[Mike Alexander]

The changes to split-register-control.c in r13487, r13488, and r13489 
introduced a bug which causes gnucash to loop forever if 
gnc_find_split_in_trans_by_memo is told to skip splits which have a 
price other than 1 and it sees such a split.  I filed bug 335465 about 
this and attached a patch to fix it.

-- 
Mike Alexander           mta at umich.edu
Ann Arbor, MI            PGP key ID: BEA343A6