Dear Maintainer,

  In case constructs:

  Add several "/* FALLTHROUGH */ /* to avoid a warning */".

  Add a "return 0;" after a returning function, to avoid a warning.

  Add information to the output of a "sys_error(...)" function.

Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
---
 menu.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/menu.c b/menu.c
index b91a974..0dfee2c 100644
--- a/menu.c
+++ b/menu.c
@@ -1295,6 +1295,7 @@ draw_menu:
 		    case 1:
 			if ((ah->flag & A_ROOT_ART) == 0)
 			    break;
+			/* FALLTHROUGH */ /* to avoid a warning */
 			/* XXX: bug? Another fall? */
 		    case 2:
 			menu_length++;
@@ -1484,6 +1485,9 @@ new_state:

 		case AC_REENTER_GROUP:
 		    menu_return(ME_REENTER_GROUP);
+ /* Previous command returns, but the compiler can't know that,
+so "return 0;" is used to tell that */
+		    return 0; /* avoid a "fallthrough" warning */
 	    }
 	    /* XXX: bug? fall */

@@ -1622,6 +1626,7 @@ new_state:
 			case 3:
 			    if (ah->attr == 0)
 				break;
+			    /* FALLTHROUGH */ /* to avoid a warning */
 			    /* XXX: check fall */
 			case 1:
 			    if ((ah->attr & A_SELECT) == 0)
@@ -1860,6 +1865,7 @@ new_state:
 		    goto empty_menu_hack;
 	    }

+	    /* FALLTHROUGH */ /* avoid a warning */
 	    /* XXX: Fall ? */
 	case K_OPEN_SUBJECT:
 	    if (numa < 0)
@@ -2251,6 +2257,7 @@ new_state:
 			case 1:
 			    if ((articles[nexta]->flag & A_ROOT_ART) == 0)
 				break;
+			    /* FALLTHROUGH */ /* to avoid a warning */
 			    /* XXX: fall? */
 			case 2:
 			    --menu_length;
@@ -2405,6 +2412,7 @@ do_auto_read:
 		    firsta = nexta;
 		goto redraw;
 	    }
+	    goto defaut; /* Uncertain code, avoid a warning */
 	    /* XXX: fall? */
 	case MC_NEXTGROUP:
 	    menu_cmd = ME_NEXT;
@@ -2419,7 +2427,8 @@ do_auto_read:
 	    break;

 	default:
-	    sys_error("show_articles returned improper value");
+	    sys_error("File %s, line %d: show_articles returned improper value, %d",
+			__FILE__, __LINE__, show_artices());
     }

 menu_exit: