linux-dmabuf: Fix rendering issue introduced in commit 9e6529c

As the modifiers are collected in a uint64_t array, the function called for each
item of the array needs to use the same type so that bit shift operations don't
result to invalid modifiers.

Issue detected by the mighty Žan Doberšek.

(cherry picked from commit 31db973)

src/linux-dmabuf/linux-dmabuf.cpp

@@ -370,7 +370,7 @@ bind_linux_dmabuf(struct wl_client *client, void *data, uint32_t version, uint32
     wl_resource_set_implementation(resource, &linux_dmabuf_implementation,
                                    data, NULL);
 
-    WS::Instance::singleton().foreachDmaBufModifier([version, resource] (int format, int modifier) {
+    WS::Instance::singleton().foreachDmaBufModifier([version, resource] (int format, uint64_t modifier) {
         if (version >= ZWP_LINUX_DMABUF_V1_MODIFIER_SINCE_VERSION) {
             uint32_t modifier_lo = modifier & 0xFFFFFFFF;
             uint32_t modifier_hi = modifier >> 32;

src/ws.cpp

@@ -491,7 +491,7 @@ const struct linux_dmabuf_buffer* Instance::getDmaBufBuffer(struct wl_resource*
     return NULL;
 }
 
-void Instance::foreachDmaBufModifier(std::function<void (int format, int modifier)> callback)
+void Instance::foreachDmaBufModifier(std::function<void (int format, uint64_t modifier)> callback)
 {
     if (m_eglDisplay == EGL_NO_DISPLAY)
         return;

src/ws.h

@@ -68,7 +68,7 @@ class Instance {
 
     void importDmaBufBuffer(struct linux_dmabuf_buffer*);
     const struct linux_dmabuf_buffer* getDmaBufBuffer(struct wl_resource*) const;
-    void foreachDmaBufModifier(std::function<void (int format, int modifier)>);
+    void foreachDmaBufModifier(std::function<void (int format, uint64_t modifier)>);
 
 private:
     Instance();