[PUSHED/OBVIOUS] Fix base class function call

["Christian Biesinger via gdb-patches" <gdb-patches@sourceware.org>]

This was a typo introduced in f6ac5f3d63e03a81c4ff3749aba234961cc9090e.

Found by looking through NetBSD's GDB patches:
https://github.com/NetBSD/pkgsrc-wip/blob/master/gdb-netbsd/patches/patch-gdb_sparc-nat.h

This patch can't be tested on Linux because Linux does not use the
sparc_target template.

gdb/ChangeLog:

2020-02-05  Christian Biesinger  <cbiesinger@google.com>

	* sparc-nat.h (struct sparc_target) <xfer_partial>: Fix base class
	function call.

Change-Id: I4fa88cbdc365efe89b84cc0619b60db38718d9ce
---
 gdb/sparc-nat.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gdb/sparc-nat.h b/gdb/sparc-nat.h
index 1dbdd80b5e..d07bd86d03 100644
--- a/gdb/sparc-nat.h
+++ b/gdb/sparc-nat.h
@@ -75,8 +75,8 @@ struct sparc_target : public BaseTarget
       return sparc_xfer_wcookie (object, annex, readbuf, writebuf,
 				 offset, len, xfered_len);
 
-    return BaseTarget (object, annex, readbuf, writebuf,
-		       offset, len, xfered_len);
+    return BaseTarget::xfer_partial (object, annex, readbuf, writebuf,
+				     offset, len, xfered_len);
   }
 };
 
-- 
2.25.0.341.g760bfbb309-goog