Fixed a logic error

Traceback:
1: 83: stringTokenStartLine declared without an initial value
2: 99: Entering while ( TRUE ) loop
3: 100: Assuming position < client->fileContents->length
4: 110: Assuming state == STATE_STRING
5: 182: Assuming !tokenReady
6: 185: Looping back to te head of the loop
7: 100: Assuming position >= client->fileContents->length
8: 103: Leaving while ( TRUE ) loop
9: 187: Assuming state == STATE_STRING
10: 188, 191: Function call argument (stringTokenStartLine) is an
uninitialized value