Fixed formatting

Some tabs were left in the file. I use the "2 spaces" convention.

main.c

@@ -39,10 +39,10 @@ void handle_global(void* data, struct wl_registry* registry, uint32_t name, cons
   if(strcmp(interface, wl_shm_interface.name) == 0) {
     wl_shm = wl_registry_bind(registry, name, &wl_shm_interface, 1);
   } else if(strcmp(interface, wl_output_interface.name) == 0) {
-		wl_output =  wl_registry_bind(registry, name, &wl_output_interface, 3);
+    wl_output =  wl_registry_bind(registry, name, &wl_output_interface, 3);
-	} else if(strcmp(interface, zwlr_screencopy_manager_v1_interface.name) == 0) {
+  } else if(strcmp(interface, zwlr_screencopy_manager_v1_interface.name) == 0) {
     zwlr_manager = wl_registry_bind(registry, name, &zwlr_screencopy_manager_v1_interface, 1);
-	}
+  }
 }
 
 void handle_global_remove(void* data, struct wl_registry* registry, uint32_t name) {
@@ -50,11 +50,11 @@ void handle_global_remove(void* data, struct wl_registry* registry, uint32_t nam
 }
 
 const struct wl_registry_listener reg_callbacks = {
-	.global = handle_global,
+  .global = handle_global,
-	.global_remove = handle_global_remove,
+  .global_remove = handle_global_remove,
 };
 
-void frame_handle_buffer(void* data,	struct zwlr_screencopy_frame_v1* frame, uint32_t format, uint32_t width, uint32_t height, uint32_t stride) {
+void frame_handle_buffer(void* data,  struct zwlr_screencopy_frame_v1* frame, uint32_t format, uint32_t width, uint32_t height, uint32_t stride) {
   printf("Handling buffer.\n");
   image_width = width;
   image_height = height;
@@ -75,10 +75,10 @@ void frame_handle_buffer(void* data,	struct zwlr_screencopy_frame_v1* frame, uin
   struct wl_shm_pool* pool = wl_shm_create_pool(wl_shm, shm_fd, buf_size);
   ASSERT(pool != NULL, "Failed to create the wl_shm_pool.");
 
-	struct wl_buffer* buffer = wl_shm_pool_create_buffer(pool, 0, width, height, stride, format);
+  struct wl_buffer* buffer = wl_shm_pool_create_buffer(pool, 0, width, height, stride, format);
   ASSERT(buffer != NULL, "Failed to create the wl_buffer.");
 
-	zwlr_screencopy_frame_v1_copy(frame, buffer);
+  zwlr_screencopy_frame_v1_copy(frame, buffer);
 }
 
 void frame_handle_flags(void* data, struct zwlr_screencopy_frame_v1* frame, uint32_t flags) {
@@ -91,15 +91,15 @@ void frame_handle_ready(void *data, struct zwlr_screencopy_frame_v1 *frame, uint
 }
 
 void frame_handle_failed(void* data, struct zwlr_screencopy_frame_v1* frame) {
-	fprintf(stderr, "Failed to copy output\n");
+  fprintf(stderr, "Failed to copy output\n");
-	exit(EXIT_FAILURE);
+  exit(EXIT_FAILURE);
 }
 
 static const struct zwlr_screencopy_frame_v1_listener frame_listener = {
-	.buffer = frame_handle_buffer,
+  .buffer = frame_handle_buffer,
-	.flags  = frame_handle_flags,
+  .flags  = frame_handle_flags,
-	.ready  = frame_handle_ready,
+  .ready  = frame_handle_ready,
-	.failed = frame_handle_failed,
+  .failed = frame_handle_failed,
 };
 
 int main() {
@@ -107,8 +107,8 @@ int main() {
   ASSERT(dpy != NULL, "Unable to connect to Wayland");
 
   struct wl_registry* registry = wl_display_get_registry(dpy);
-	wl_registry_add_listener(registry, &reg_callbacks, NULL);
+  wl_registry_add_listener(registry, &reg_callbacks, NULL);
-	wl_display_roundtrip(dpy);
+  wl_display_roundtrip(dpy);
 
   ASSERT(wl_shm != NULL, "core.wl_shm not supported.");
 
@@ -121,7 +121,7 @@ int main() {
   ASSERT(frame != NULL, "wlr-screencopy-unstable-v1.zwlr_screencopy_manager_v1::capture_output has failed");
 
   zwlr_screencopy_frame_v1_add_listener(frame, &frame_listener, wl_output);
-	wl_display_roundtrip(dpy);
+  wl_display_roundtrip(dpy);
 
   while(ready == 0 && wl_display_dispatch(dpy) != -1) {
     // Empty