[gcc r14-1990] RISC-V: Fix compiler warning of riscv_arg_has_vector

[Robin Dapp <rdapp@gcc.gnu.org>]

https://gcc.gnu.org/g:4a6c44f4ad4198382b7c70f4d40eefb69e71132e

commit r14-1990-g4a6c44f4ad4198382b7c70f4d40eefb69e71132e
Author: Lehua Ding <lehua.ding@rivai.ai>
Date:   Tue Jun 20 17:45:17 2023 +0800

    RISC-V: Fix compiler warning of riscv_arg_has_vector
    
    Hi,
    
    This little patch fixes a compile warning issue that my previous patch
    introduced, sorry for introducing this issue.
    
    Best,
    Lehua
    
    gcc/ChangeLog:
    
            * config/riscv/riscv.cc (riscv_arg_has_vector): Add default
            switch handler.

Diff:
---
 gcc/config/riscv/riscv.cc | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index 6eb63a9d4de..9558e28de3f 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -3820,8 +3820,8 @@ riscv_arg_has_vector (const_tree type)
   switch (TREE_CODE (type))
     {
     case RECORD_TYPE:
-      /* If it is a record, it is further determined whether its fileds have
-         vector type.  */
+      /* If it is a record, it is further determined whether its fields have
+	 vector type.  */
       for (tree f = TYPE_FIELDS (type); f; f = DECL_CHAIN (f))
 	if (TREE_CODE (f) == FIELD_DECL)
 	  {
@@ -3835,6 +3835,8 @@ riscv_arg_has_vector (const_tree type)
       break;
     case ARRAY_TYPE:
       return riscv_arg_has_vector (TREE_TYPE (type));
+    default:
+      break;
     }
 
   return false;