ubsan: csky: left shift cannot be represented in type 'int'

[Alan Modra]

	* csky-dis.c (csky_chars_to_number): Remove abort and unnecessary
	mask.

diff --git a/opcodes/csky-dis.c b/opcodes/csky-dis.c
index af830f3651..d7ffb13b5f 100644
--- a/opcodes/csky-dis.c
+++ b/opcodes/csky-dis.c
@@ -134,17 +134,15 @@ csky_get_mask (struct csky_opcode_info const *pinfo)
 static unsigned int
 csky_chars_to_number (unsigned char * buf, int n)
 {
-  if (n <= 0)
-    abort ();
   int i;
   unsigned int val = 0;
 
   if (dis_info.info->endian == BFD_ENDIAN_BIG)
     for (i = 0; i < n; i++)
-      val = val << 8 | (buf[i] & 0xff);
+      val = val << 8 | buf[i];
   else
     for (i = n - 1; i >= 0; i--)
-      val = val << 8 | (buf[i] & 0xff);
+      val = val << 8 | buf[i];
   return val;
 }
 

-- 
Alan Modra
Australia Development Lab, IBM