Fixes QA warning, pr is unused, so it's safe to remove

 * QA Notice: Package triggers severe warnings which indicate that it
 *            may exhibit random runtime failures.
 * display.c:1253:2: warning: variable 'pr' is uninitialized when used here [-Wuninitialized]
diff --git a/display.c b/display.c
index c8640a9..5c48e17 100644
--- a/display.c
+++ b/display.c
@@ -1132,7 +1132,7 @@ redrawForm(Buffer *buf, Anchor *a, Line *l, int pos,
     FormItemList *fi;
     int i, j, n, ctype, delta, bcol, ncol, epos;
     char *p;
-    Lineprop *pr, prop;
+    Lineprop prop;
 #ifdef USE_ANSI_COLOR
     Linecolor *pc;
 #endif
@@ -1250,7 +1250,6 @@ redrawForm(Buffer *buf, Anchor *a, Line *l, int pos,
 #endif
 	j = ncol;
 	p += delta;
-	pr += delta;
 #ifdef USE_ANSI_COLOR
 	pc += delta;
 #endif