strip_comments does not strip when "|--" is found.

[Raihan9797]

Example occurs when "|" is directly before the single line comment token.
Issue is resolved when you separate them with a space.

edge_case = """myval := oneval || otherval ||--;
continuedvals;
"""
processed = sqlparse.format(edge_case, strip_comments=True)
sqlparse.split(processed)

# should only be 1 statement but getting 2
# returns ['myval := oneval || otherval ||--;', 'continuedvals;']

### bug doesnt occur when there is a space
FIXED_edge_case = """myval := oneval || otherval || --;
continuedvals;
"""