fs/udf/balloc.c: mark a variable as uninitialized_var()

Kill a may-be-used-uninitialized warning.

Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index 87e87dc..ab26176 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -689,7 +689,7 @@
 	uint32_t spread = 0xFFFFFFFF, nspread = 0xFFFFFFFF;
 	uint32_t newblock = 0, adsize;
 	uint32_t elen, goal_elen = 0;
-	kernel_lb_addr eloc, goal_eloc;
+	kernel_lb_addr eloc, uninitialized_var(goal_eloc);
 	struct extent_position epos, goal_epos;
 	int8_t etype;