Description: Fix spelling unknow->unknown 
Author: Sascha Steinbiss <sascha@steinbiss.name> 
Forwarded: https://github.com/standage/AEGeAn/pull/161 
--- a/src/core/AgnLocus.c
+++ b/src/core/AgnLocus.c
@@ -344,7 +344,7 @@
         break;
       default:
         desc = NULL;
-        fprintf(stderr, "error: unknow comp classification %d\n", c);
+        fprintf(stderr, "error: unknown comp classification %d\n", c);
         break;
     }
     desc->comparison_count++;
