Parse error: syntax error, unexpected '$fp' (T_VARIABLE) in .../ow_libraries/smarty3/sysplugins/smarty_internal_data.php on line 352

Even though no files showed any revision date on my server, when I got into the smarty_internal_data file, there were some random characters thrown in, mostly non-Latin, at the beginning of the line. "variable" was changed to "pariable" and a random P was after the ; on the line...?

It was easy enough to fix looking at the original and then removing / changing the random stuff in the server file, but not sure how this could have happened... Any ideas?

I didn't do any maintenance; I didn't delete any themes...