## Fixes a compilation error with GCC 4.1

diff -urNad aspell~/modules/filter/nroff.cpp aspell/modules/filter/nroff.cpp
--- aspell~/modules/filter/nroff.cpp	2005-07-01 14:04:49.000000000 -0700
+++ aspell/modules/filter/nroff.cpp	2006-05-13 15:12:32.000000000 -0700
@@ -73,7 +73,7 @@
       return false;
     }
     
-    bool NroffFilter::process_char (FilterChar::Chr c);
+    bool process_char (FilterChar::Chr c);
       
   public: