kconfig/symbol.c: use correct pointer type argument for sizeof

sym_arr is of type struct symbol **.
So in malloc we need sizeof(struct symbol *).

The problem was indicated by coccinelle.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/scripts/kconfig/symbol.c b/scripts/kconfig/symbol.c
index 20136ff..3c8bd9b 100644
--- a/scripts/kconfig/symbol.c
+++ b/scripts/kconfig/symbol.c
@@ -1061,7 +1061,7 @@
 	}
 	if (sym_match_arr) {
 		qsort(sym_match_arr, cnt, sizeof(struct sym_match), sym_rel_comp);
-		sym_arr = malloc((cnt+1) * sizeof(struct symbol));
+		sym_arr = malloc((cnt+1) * sizeof(struct symbol *));
 		if (!sym_arr)
 			goto sym_re_search_free;
 		for (i = 0; i < cnt; i++)