gdb: fix one missing cygwin dll rename

noticed while refreshing the patches

gdb/1005-msysize.patch

@@ -33,6 +33,20 @@ index d46de87f238..971efd086c0 100644
      {
        asection *text = NULL;
  
+--- gdb-14.2/gdb/windows-tdep.c.orig	2025-02-03 17:39:53.204129800 +0100
++++ gdb-14.2/gdb/windows-tdep.c	2025-02-03 18:32:18.712714400 +0100
+@@ -38,7 +38,11 @@
+ #include "libcoff.h"
+ #include "solist.h"
+ 
++#ifdef __MSYS__
++#define CYGWIN_DLL_NAME "msys-2.0.dll"
++#else
+ #define CYGWIN_DLL_NAME "cygwin1.dll"
++#endif
+ 
+ /* Windows signal numbers differ between MinGW flavors and between
+    those and Cygwin.  The below enumerations were gleaned from the
 --- gdb-14.2/libctf/configure.ac.orig	2024-03-03 06:55:00.000000000 +0100
 +++ gdb-14.2/libctf/configure.ac	2025-02-03 17:10:13.336687000 +0100
 @@ -227,7 +227,7 @@

gdb/PKGBUILD

@@ -47,7 +47,7 @@ sha256sums=('2d4dd8061d8ded12b6c63f55e45344881e8226105f4d2a9b234040efa5ce7772'
             '15c7397d85b4f43ac22d5e81565de0d8d0a0b6473db2ab9a04fbb72f061fbf4e'
             '06f96b9a455344d1cc85b202fb65450fe3097005d39a680cc7945a8178ea9976'
             '268c35db936435f1d38c318956fffec14fd90f2bba085537cd5a44183f05a469'
-            '51f531d06d864b76e1f3f811604e23628718b4fe827f9a59da0fc00a524c6215'
+            '5d497e908e195f416d1cb54d4023706ef8aeae16c753c704db6af0db75768686'
             '66e0c1c6c6878b39da16c163d84b1ea303b0875b3ca6ccfef6d64872ecac9faa')
 
 prepare() {