[IA64] fix: warning: `ql_size' might be used uninitialized

Oops.  Should have caught this before I checked it in.

Signed-off-by: Tony Luck <tony.luck@intel.com>
diff --git a/include/asm-ia64/pgalloc.h b/include/asm-ia64/pgalloc.h
index e86a8c3..2b71273 100644
--- a/include/asm-ia64/pgalloc.h
+++ b/include/asm-ia64/pgalloc.h
@@ -29,7 +29,7 @@
 
 static inline long pgtable_quicklist_total_size(void)
 {
-	long ql_size;
+	long ql_size = 0;
 	int cpuid;
 
 	for_each_online_cpu(cpuid) {