From: Toni Wilen <twilen@winuae.net>
Date: Sat, 27 Nov 2021 19:18:56 +0000 (+0200)
Subject: Put important checks back.
X-Git-Tag: 4900~7
X-Git-Url: https://git.unchartedbackwaters.co.uk/w/?a=commitdiff_plain;h=e11f7b31c1d7a0b68c63698a5c3eb93374175dd1;p=francis%2Fwinuae.git

Put important checks back.
---

diff --git a/drawing.cpp b/drawing.cpp
index ac3e8d7e..45118b71 100644
--- a/drawing.cpp
+++ b/drawing.cpp
@@ -4799,7 +4799,7 @@ void hsync_record_line_state (int lineno, enum nln_how how, int changed)
 		}
 		break;
 	case nln_lower:
-		if (state[-1] == LINE_UNDECIDED) {
+		if (lineno > 0 && state[-1] == LINE_UNDECIDED) {
 			state[-1] = LINE_DECIDED; //LINE_BLACK;
 		}
 		*state = changed ? LINE_DECIDED : LINE_DONE;
@@ -4822,12 +4822,16 @@ void hsync_record_line_state (int lineno, enum nln_how how, int changed)
 		break;
 	case nln_upper_black_always:
 		*state = LINE_DECIDED;
-		state[-1] = LINE_BLACK;
+		if (lineno > 0) {
+			state[-1] = LINE_BLACK;
+		}
 		break;
 	case nln_upper_black:
 		changed |= state[0] != LINE_DONE;
 		*state = changed ? LINE_DECIDED : LINE_DONE;
-		state[-1] = LINE_DONE;
+		if (lineno > 0) {
+			state[-1] = LINE_DONE;
+		}
 		break;
 	}
 }