gcc13: 13.1.0 -> 13.2.0

The patch would no longer apply, as the the changed part is no longer
exactly at the end of the file.  There's more content now, but it
suffices to just add a preserved empty line into the diff.

pkgs/development/compilers/gcc/13/default.nix

@@ -55,7 +55,7 @@ with lib;
 with builtins;
 
 let majorVersion = "13";
-    version = "${majorVersion}.1.0";
+    version = "${majorVersion}.2.0";
     disableBootstrap = !stdenv.hostPlatform.isDarwin && !profiledCompiler;
 
     inherit (stdenv) buildPlatform hostPlatform targetPlatform;
@@ -63,7 +63,7 @@ let majorVersion = "13";
     patches =
          optional (targetPlatform != hostPlatform) ../libstdc++-target.patch
       ++ optional noSysDirs ../gcc-12-no-sys-dirs.patch
-      ++ optional noSysDirs ../no-sys-dirs-riscv.patch
+      ++ optional noSysDirs ./no-sys-dirs-riscv.patch
       ++ [
         ../gnat-cflags-11.patch
         ../gcc-12-gfortran-driving.patch
@@ -201,7 +201,7 @@ lib.pipe ((callFile ../common/builder.nix {}) ({
 
   src = fetchurl {
     url = "mirror://gcc/releases/gcc-${version}/gcc-${version}.tar.xz";
-    sha256 = "sha256-YdaE8Kpedqxlha2ImKJCeq3ol57V5/hUkihsTfwT7oY=";
+    hash = "sha256-4nXnZEKmBnNBon8Exca4PYYTFEAEwEE1KIY9xrXHQ9o=";
   };
 
   inherit patches;

pkgs/development/compilers/gcc/13/no-sys-dirs-riscv.patch

@@ -0,0 +1,13 @@
+--- a/gcc/config/riscv/linux.h
++++ b/gcc/config/riscv/linux.h
+@@ -69,9 +69,5 @@
+ 
+ #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+ 
+-#define STARTFILE_PREFIX_SPEC 			\
+-   "/lib" XLEN_SPEC "/" ABI_SPEC "/ "		\
+-   "/usr/lib" XLEN_SPEC "/" ABI_SPEC "/ "	\
+-   "/lib/ "					\
+-   "/usr/lib/ "
++#define STARTFILE_PREFIX_SPEC ""
+