potential bugs in inmemconncomps.cpp

[luyi0619]

I find the vertex data is used in the update function before initialization.

The following graph is used to test, in adjlist format.

0 1 1
2 1 0 1
3 2 2 3 4
4 3 2 2 4
5 4 2 2 3

The expected output should be:

List of labels was written to file: /home/user/test.adj.components

1. label: 2, size: 3
2. label: 0, size: 2

However, inmemconncomps.cpp gives the following:

List of labels was written to file: /home/user/test.adj.components

1. label: 0, size: 5