Corrected a stack corruption error (that I have never seen in

practice but which was detected by AddressSanitizer.  Also
corrected a crash condition in the absence of a window;  also
hard to reproduce.

VERSION

@@ -1 +1 @@
-8.3.326
+8.3.327

calma/CalmaRdpt.c

@@ -698,10 +698,9 @@ calmaElementText()
     static int ignore[] = { CALMA_PATHTYPE, CALMA_WIDTH, -1 };
     char *textbody = NULL;
     int nbytes, rtype;
-    int layer, textt, cifnum;
+    int layer, textt, cifnum, textpres;
     TileType type;
     Rect r;
-    unsigned short textpres;
     double dval;
     int size, angle, font, pos;
 

graphics/grTk4.c

@@ -83,6 +83,7 @@ grtkGetCursorPos (mw, p)
     Window win1, win2;
 
     if (mw == NULL) mw = grCurrent.mw;
+    if (mw == NULL) return FALSE;
 
     XQueryPointer(grXdpy, Tk_WindowId((Tk_Window)mw->w_grdata),
 		  &win1, &win2, &x1, &y1,