patch 8.2.1379: curly braces expression ending in " }" does not work

Problem:    Curly braces expression ending in " }" does not work.
Solution:   Skip over white space when checking for "}". (closes #6634)
diff --git a/src/dict.c b/src/dict.c
index af1e1e9..ad482cd 100644
--- a/src/dict.c
+++ b/src/dict.c
@@ -817,7 +817,7 @@
     {
 	if (eval1(&start, &tv, NULL) == FAIL)	// recursive!
 	    return FAIL;
-	if (*start == '}')
+	if (*skipwhite(start) == '}')
 	    return NOTDONE;
     }