Fixed parsing of boundary patches from binary format

[filippo-biondi]

Since the end of boundary patches in binary file was checked by stripping the line and checking if the result was equal to '}' it was possible that the end of a patch was miss-detected, since a '}' surrounded by characters that are removed by the strip function could appear randomly in the binary content (and indeed happened in my case ).

I updated the check to remove only withe spaces, tabs and new lines in the stripping operation and check for the ');' characters at the end of the previous line to determine if the actual end of the boundary patch is reached.

I think its theoretically possible that the end of a patch is still miss-detected (since a ');' followed on the next line by a '}' surrounded by tabs or withe-spaces could still appear randomly in the binary content) but it's much more unlikely.