tweaks: remove several unneeded bad-state checks and their messages

No one ever reported seeing any of them, and each of these checks
has been there for at least a year.

src/help.c

@@ -556,9 +556,6 @@ void help_init(void)
 		}
 	}
 #endif /* !NANO_TINY */
-
-	if (strlen(help_text) > allocsize)
-		statusline(ALERT, "Help text spilled over -- please report a bug");
 }
 
 /* Return the function that is bound to the given key, accepting certain

src/text.c

@@ -551,10 +551,6 @@ void do_undo(void)
 		goto_line_posx(u->lineno, u->begin);
 		break;
 	case ENTER:
-		if (f->next == NULL) {
-			statusline(ALERT, "Missing break line -- please report a bug");
-			break;
-		}
 		undidmsg = _("line break");
 		from_x = (u->begin == 0) ? 0 : u->mark_begin_x;
 		to_x = (u->begin == 0) ? u->mark_begin_x : u->begin;
@@ -672,7 +668,6 @@ void do_undo(void)
 		break;
 #endif
 	default:
-		statusline(ALERT, "Wrong undo type -- please report a bug");
 		break;
 	}
 
@@ -752,10 +747,6 @@ void do_redo(void)
 		goto_line_posx(u->lineno, u->begin);
 		break;
 	case JOIN:
-		if (f->next == NULL) {
-			statusline(ALERT, "Missing join line -- please report a bug");
-			break;
-		}
 		redidmsg = _("line join");
 		/* When the join was done by a Backspace at the tail of the file,
 		 * and the nonewlines flag isn't set, do not join anything, as
@@ -838,7 +829,6 @@ void do_redo(void)
 		break;
 #endif
 	default:
-		statusline(ALERT, "Wrong redo type -- please report a bug");
 		break;
 	}
 
@@ -1264,7 +1254,6 @@ void add_undo(undo_type action)
 		break;
 #endif
 	default:
-		statusline(ALERT, "Wrong undo adding type -- please report a bug");
 		break;
 	}
 
@@ -1417,7 +1406,6 @@ void update_undo(undo_type action)
 		u->begin = openfile->current_x;
 		break;
 	default:
-		statusline(ALERT, "Wrong undo update type -- please report a bug");
 		break;
 	}
 }

src/utils.c

@@ -329,10 +329,6 @@ char *mallocstrncpy(char *dest, const char *src, size_t n)
 	if (src == NULL)
 		src = "";
 
-#ifndef NANO_TINY
-	if (src == dest)
-		fprintf(stderr, "\r*** Copying a string to itself -- please report a bug ***");
-#endif
 	dest = charealloc(dest, n);
 	strncpy(dest, src, n);
 
@@ -512,12 +508,10 @@ linestruct *fsfromline(ssize_t lineno)
 		while (f->lineno != lineno && f->next != NULL)
 			f = f->next;
 
-	if (f->lineno != lineno) {
+	if (f->lineno == lineno)
-		statusline(ALERT, "Gone undo line -- please report a bug");
-		return NULL;
-	}
-
 		return f;
+	else
+		return NULL;
 }
 #endif /* !NANO_TINY */
 

src/winio.c

@@ -2793,15 +2793,6 @@ int update_line(linestruct *fileptr, size_t index)
 
 	row = fileptr->lineno - openfile->edittop->lineno;
 
-	/* If the line is offscreen, don't even try to display it. */
-	if (row < 0 || row >= editwinrows) {
-#ifndef NANO_TINY
-		statusline(ALERT, "Badness: tried to display a line on row %i"
-								" -- please report a bug", row);
-#endif
-		return 0;
-	}
-
 	/* First, blank out the row. */
 	blank_row(edit, row, 0, COLS);
 
@@ -3017,20 +3008,13 @@ void edit_scroll(bool direction)
 {
 	linestruct *line;
 	size_t leftedge;
-	int remainder = 0, nrows = 1;
+	int nrows = 1;
 
 	/* Move the top line of the edit window one row up or down. */
 	if (direction == BACKWARD)
-		remainder = go_back_chunks(1, &openfile->edittop, &openfile->firstcolumn);
+		go_back_chunks(1, &openfile->edittop, &openfile->firstcolumn);
 	else
-		remainder = go_forward_chunks(1, &openfile->edittop, &openfile->firstcolumn);
+		go_forward_chunks(1, &openfile->edittop, &openfile->firstcolumn);
-
-	if (remainder > 0) {
-#ifndef NANO_TINY
-		statusline(ALERT, "Could not scroll -- please report a bug");
-#endif
-		return;
-	}
 
 	/* Actually scroll the text of the edit window one row up or down. */
 	scrollok(edit, TRUE);