gdb: LoongArch: Use GDB style to check readbuf and writebuf

The GDB style is to write 'if (readbuf != nullptr)', and the same for
writebuf.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>

diff --git a/gdb/loongarch-tdep.c b/gdb/loongarch-tdep.c
index 28f04094f640119e4661c27f8dc7023f7151cf54..8e74c9b779dac7bf18c56d0ed5698f8a0b15eba2 100644 (file)
--- a/gdb/loongarch-tdep.c
+++ b/gdb/loongarch-tdep.c
@@ -269,9 +269,9 @@ loongarch_return_value (struct gdbarch *gdbarch, struct value *function,
     }
 
   /* Extract the return value from the register where it was stored.  */
-  if (readbuf)
+  if (readbuf != nullptr)
     regcache->raw_read_part (regnum, 0, len, readbuf);
-  if (writebuf)
+  if (writebuf != nullptr)
     regcache->raw_write_part (regnum, 0, len, writebuf);
 
   return RETURN_VALUE_REGISTER_CONVENTION;