Memory leak caused by commit 1da9bef8

[banjiuqingshan]

=================================================================
==720210==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 1 byte(s) in 1 object(s) allocated from:
#0 0x7fe82b2e937f in __interceptor_calloc (/usr/lib64/libasan.so.6+0xaf37f)
#1 0x7fe82b116baf in solv_calloc /root/rpmbuild/BUILD/libsolv-0.7.22/src/util.c:79
#2 0x7fe82b06863a in map_init /root/rpmbuild/BUILD/libsolv-0.7.22/src/bitmap.c:24
#3 0x7fe82b169d1f in solver_disablechoicerules /root/rpmbuild/BUILD/libsolv-0.7.22/src/rules.c:3577
#4 0x7fe82b088cac in solver_check_unneeded_choicerules /root/rpmbuild/BUILD/libsolv-0.7.22/src/solver.c:2651
#5 0x7fe82b08a34a in solver_run_sat /root/rpmbuild/BUILD/libsolv-0.7.22/src/solver.c:2845
#6 0x7fe82b09ac00 in solver_solve /root/rpmbuild/BUILD/libsolv-0.7.22/src/solver.c:4267
#7 0x403cf5 in main /root/rpmbuild/BUILD/libsolv-0.7.22/tools/testsolv.c:241
#8 0x7fe82ae7726f (/usr/lib64/libc.so.6+0x2d26f)

SUMMARY: AddressSanitizer: 1 byte(s) leaked in 1 allocation(s).

It has been determined that the memory allocated by map_init in solver_disablechoicerules failed to be released in time

[banjiuqingshan]

Maybe this patch is not very appropriate, but it does solve the memory leak