[6802] correct logic

[Gavin D. Smith]

Revision: 6802
          http://svn.sv.gnu.org/viewvc/?view=rev&root=texinfo&revision=6802
Author:   gavin
Date:     2015-11-22 21:16:44 +0000 (Sun, 22 Nov 2015)
Log Message:
-----------
correct logic

Modified Paths:
--------------
    trunk/install-info/install-info.c

Modified: trunk/install-info/install-info.c
===================================================================
--- trunk/install-info/install-info.c   2015-11-22 20:50:06 UTC (rev 6801)
+++ trunk/install-info/install-info.c   2015-11-22 21:16:44 UTC (rev 6802)
@@ -788,12 +788,14 @@
               nread = fread (data, sizeof (data), 1, f);
               if (nread == 0)
                 return 0;
+              goto determine_file_type; /* success */
             }
         }
       errno = 0;
       return 0; /* unknown error */
     }
 
+determine_file_type:
   if (!compression_program)
     compression_program = &local_compression_program;