53 Pa. Stat. § 871
No misnomer, omission, informality, or irregularity heretofore made or occurring of or in the name, style or title of any municipal corporation of the commonwealth of Pennsylvania, in any ordinance, by-law or regulation passed by the councils thereof, and approved by the mayor or burgess thereof, for the government of the inhabitants within the territorial limits comprising the same; or in elections held therein to incur or increase the indebtedness thereof; or in the annexation of territory thereto or extending the limits thereof, over which jurisdiction has been and now is exercised by the corporate authorities; or in the issuing of bonds for the indebtedness thereof; or in deeds or other conveyances of lands or hereditaments, to or from the same; or contracts by or with the same; or in any other ordinance, matter or thing within the lawful powers or duties thereof, shall invalidate the same; but all such ordinances, elections, annexations or extensions of territory, bonds, deeds, contracts, and all other matters or things done as aforesaid, are hereby validated and made good in law, as if done in the proper corporate name of such municipality: Provided, That the matters hereinbefore validated shall be otherwise legal; and that this act shall not affect any suit or suits now pending.
53 P.S. § 871