Fix issues 308

[scrise]

The condition j-- did the decrement before we compared whether values are equal in the for loop.

[scrise]

[----------] 8 tests from LshIndex_Brief100K (147359 ms total)

[----------] Global test environment tear-down
[==========] 8 tests from 1 test case ran. (147359 ms total)
[ PASSED ] 1 test.
[ FAILED ] 7 tests, listed below:
[ FAILED ] LshIndex_Brief100K.TestSearch
[ FAILED ] LshIndex_Brief100K.TestSearch2
[ FAILED ] LshIndex_Brief100K.TestAddIncremental
[ FAILED ] LshIndex_Brief100K.TestIncremental2
[ FAILED ] LshIndex_Brief100K.TestSave
[ FAILED ] LshIndex_Brief100K.TestCopy
[ FAILED ] LshIndex_Brief100K.TestCopy2

7 FAILED TESTS

The flann_lsh_test failed for a long time.

[scrise]

#308