TreeRevFilter: fix wrong stop when the given path disappears

TreeRevFilter: fix wrong stop when the given path disappears

When chgs[i] == adds[i], it indicated that a commit added some files
that pList[i] did not have, but didn't mean pList[i] is "empty tree
root".

Follow the example below:

.                           .
└── src                     └── src
    └── d1          ==>          └── d1
        └─ file1                    ├─  file1
                                    └── file2
   c.parents[i]                   c

The variable chg[i] equals to variable add[i],
but commit c.parents[i] is not "empty tree root".

We should add an additional check for no paths matching the filter.

Bug: 577227
Change-Id: I834e9ddd0de86b108b280a1139519ea962913b38
Signed-off-by: kylezhao <kylezhao@tencent.com>