t9106: fix a race condition that caused svn to miss modifications
t9106: fix a race condition that caused svn to miss modifications

carbonated beverage noticed this test was occasionally failing.

Signed-off-by: Eric Wong <8c2951295f8292b0c03727bc4652981172298eae@yhbt.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git