gnu: dolphin-emu: Fix build with gcc@14.

* gnu/packages/emulators.scm (dolphin-emu)[arguments]<#:phases>
{'generate-fonts&hardcore-libvulkan-path}: Include a missing header.

Change-Id: I4ac3a69e956369015890663298b1e55aeaee1e5b

gnu/packages/emulators.scm

@@ -409,6 +409,10 @@ It aims to support Nintendo DSi and 3DS as well.")
                       (libvulkan
                        (search-input-file inputs "/lib/libvulkan.so")))
                   (chdir "docs")
+                  ;; Include a missing header, needed for gcc@14.
+                  (substitute* "gc-font-tool.cpp"
+                    (("#include <cstring>" all)
+                      (string-append all "\n#include <cstdint>")))
                   (invoke "bash" "-c" "g++ -O2 $(freetype-config \
 --cflags --libs) gc-font-tool.cpp -o gc-font-tool")
                   (invoke "./gc-font-tool" "a" fontfile "font_western.bin")