Fix file encoding of bigint-func.cc

tautschnig · tautschnig · commit 16381917a9c8 · 2023-02-01T09:00:48.000Z
Switch the file encoding of bigint-func.cc from ISO-8859 text to UTF-8 Unicode text. Inspection using `file` suggests this is the only source file with wrong encoding. Fixes: #7509
diff --git a/src/big-int/bigint-func.cc b/src/big-int/bigint-func.cc
@@ -2,7 +2,7 @@
 // Author: Dirk Zoller
 // References:
 //
-// [1] H�ttenhofer/Lesch/Peyerimhoff, Mathematik in Anwendung mit C++
+// [1] Hüttenhofer/Lesch/Peyerimhoff, Mathematik in Anwendung mit C++
 //     Heidelberg, Wiesbaden 1994
 
 #include "bigint.hh"
