Remove remaining wl_signal_emit calls

Replace them with wlr_signal_emit_safe, which correctly handles
cases where a listener removes another listener.

Reported-by: Isaac Freund <ifreund@ifreund.xyz>

render/allocator/allocator.c

@@ -14,6 +14,7 @@
 #include "render/allocator/drm_dumb.h"
 #include "render/allocator/shm.h"
 #include "render/wlr_renderer.h"
+#include "util/signal.h"
 
 #if WLR_HAS_GBM_ALLOCATOR
 #include "render/allocator/gbm.h"
@@ -158,7 +159,7 @@ void wlr_allocator_destroy(struct wlr_allocator *alloc) {
 	if (alloc == NULL) {
 		return;
 	}
-	wl_signal_emit(&alloc->events.destroy, NULL);
+	wlr_signal_emit_safe(&alloc->events.destroy, NULL);
 	alloc->impl->destroy(alloc);
 }
 

types/tablet_v2/wlr_tablet_v2_pad.c

@@ -2,7 +2,6 @@
 #define _POSIX_C_SOURCE 200809L
 #endif
 
-#include "tablet-unstable-v2-protocol.h"
 #include <assert.h>
 #include <stdlib.h>
 #include <types/wlr_tablet_v2.h>
@@ -12,6 +11,8 @@
 #include <wlr/types/wlr_tablet_pad.h>
 #include <wlr/types/wlr_tablet_v2.h>
 #include <wlr/util/log.h>
+#include "util/signal.h"
+#include "tablet-unstable-v2-protocol.h"
 
 static const struct wlr_tablet_pad_v2_grab_interface default_pad_grab_interface;
 
@@ -49,9 +50,9 @@ static void handle_tablet_pad_ring_v2_set_feedback(struct wl_client *client,
 		.serial = serial,
 		.description = description,
 		.index = aux->index
-		};
+	};
 
-	wl_signal_emit(&aux->pad->pad->events.ring_feedback, &evt);
+	wlr_signal_emit_safe(&aux->pad->pad->events.ring_feedback, &evt);
 }
 
 static void handle_tablet_pad_ring_v2_destroy(struct wl_client *client,
@@ -87,9 +88,9 @@ static void handle_tablet_pad_strip_v2_set_feedback(struct wl_client *client,
 		.serial = serial,
 		.description = description,
 		.index = aux->index
-		};
+	};
 
-	wl_signal_emit(&aux->pad->pad->events.strip_feedback, &evt);
+	wlr_signal_emit_safe(&aux->pad->pad->events.strip_feedback, &evt);
 }
 
 static void handle_tablet_pad_strip_v2_destroy(struct wl_client *client,
@@ -114,9 +115,9 @@ static void handle_tablet_pad_v2_set_feedback( struct wl_client *client,
 		.serial = serial,
 		.index = button,
 		.description = description,
-		};
+	};
 
-	wl_signal_emit(&pad->pad->events.button_feedback, &evt);
+	wlr_signal_emit_safe(&pad->pad->events.button_feedback, &evt);
 }
 
 static const struct zwp_tablet_pad_v2_interface tablet_pad_impl = {

types/tablet_v2/wlr_tablet_v2_tool.c

@@ -2,9 +2,6 @@
 #define _POSIX_C_SOURCE 200809L
 #endif
 
-#include "tablet-unstable-v2-protocol.h"
-#include "util/array.h"
-#include "util/time.h"
 #include <assert.h>
 #include <stdlib.h>
 #include <types/wlr_tablet_v2.h>
@@ -13,6 +10,10 @@
 #include <wlr/types/wlr_tablet_tool.h>
 #include <wlr/types/wlr_tablet_v2.h>
 #include <wlr/util/log.h>
+#include "util/array.h"
+#include "util/signal.h"
+#include "util/time.h"
+#include "tablet-unstable-v2-protocol.h"
 
 static const struct wlr_tablet_tool_v2_grab_interface default_tool_grab_interface;
 
@@ -46,7 +47,7 @@ static void handle_tablet_tool_v2_set_cursor(struct wl_client *client,
 		.seat_client = tool->seat->seat_client,
 	};
 
-	wl_signal_emit(&tool->tool->events.set_cursor, &evt);
+	wlr_signal_emit_safe(&tool->tool->events.set_cursor, &evt);
 }
 
 static void handle_tablet_tool_v2_destroy(struct wl_client *client,

types/wlr_buffer.c

@@ -64,7 +64,7 @@ void wlr_buffer_unlock(struct wlr_buffer *buffer) {
 	buffer->n_locks--;
 
 	if (buffer->n_locks == 0) {
-		wl_signal_emit(&buffer->events.release, NULL);
+		wlr_signal_emit_safe(&buffer->events.release, NULL);
 	}
 
 	buffer_consider_destroy(buffer);