Bugfix: if a >=256-colour sprite icon is plotted, and then a shaded and/or...

Bugfix: if a >=256-colour sprite icon is plotted, and then a shaded and/or selected text-plus-sprite icon is plotted, where the sprite in the latter icon is unspecified (no validation string, or no 'S' command), then a SpriteOp call from within ColourTrans data aborts. This caused aborts when certain rectangles of the ImageFS options window were redrawn.

Version 4.13. Not tagged

VersionASM

@@ -8,5 +8,5 @@
 Module_MajorVersion	SETS    "4.13"
 Module_Version          SETA    413
 Module_MinorVersion	SETS	""
-Module_Date		SETS    "27 Nov 1998"
+Module_Date		SETS    "09 Dec 1998"
 		        END

VersionNum

@@ -5,10 +5,10 @@
  */
 #define Module_MajorVersion_CMHG     	4.13
 #define Module_MinorVersion_CMHG	
-#define Module_Date_CMHG      		27 Nov 1998
+#define Module_Date_CMHG      		09 Dec 1998
 
 #define Module_MajorVersion     	"4.13"
 #define Module_Version                  413
 #define Module_MinorVersion		""
-#define Module_Date      		"27 Nov 1998"
+#define Module_Date      		"09 Dec 1998"
 

s/Wimp04

@@ -3809,6 +3809,7 @@ calcinverse ROUT
         LDR     R1, sprite_log2bpp      ; if <256-colour sprite without palette, we pass palette from Wimp workspace, so no problem
         CMP     R1, #3                  ; if <256-colour sprite with palette, cachespritedata has already updated pixtable_params
         BLGE    cachespriteaddress      ; R2 -> this sprite, ie *not* the first sprite in this run of matching-mode sprites!
+        EXIT    VS                      ; bail out now if sprite not found!
         CMP     R1, #3
         Push    "R2", GE
         ADR     R0, pixtable_params