modules/*: drop til_setup_t.free_func() NULL setup checks

Trivial cleanup.  These are unnecessary nowadays since
til_setup_free() won't invoke the free_func() on a NULL setup,
and everything uses til_setup_free() to free a til_setup_t.

6 files changed, 19 insertions, 31 deletions

diff --git a/src/modules/asc/asc.c b/src/modules/asc/asc.c
index e359e62..50f81b3 100644
--- a/src/modules/asc/asc.c
+++ b/src/modules/asc/asc.c
@@ -167,10 +167,8 @@ static void asc_setup_free(til_setup_t *setup)
 {
 	asc_setup_t	*s = (asc_setup_t *)setup;
 
-	if (s) {
-		free((void *)s->string);
-		free(s);
-	}
+	free((void *)s->string);
+	free(s);
 }
 
 
diff --git a/src/modules/checkers/checkers.c b/src/modules/checkers/checkers.c
index 998c5bf..0e11d72 100644
--- a/src/modules/checkers/checkers.c
+++ b/src/modules/checkers/checkers.c
@@ -515,10 +515,8 @@ static void checkers_setup_free(til_setup_t *setup)
 {
 	checkers_setup_t	*s = (checkers_setup_t *)setup;
 
-	if (s) {
-		til_setup_free(s->fill_module_setup);
-		free(setup);
-	}
+	til_setup_free(s->fill_module_setup);
+	free(setup);
 }
 
 
diff --git a/src/modules/mixer/mixer.c b/src/modules/mixer/mixer.c
index d8c1326..cf57d3d 100644
--- a/src/modules/mixer/mixer.c
+++ b/src/modules/mixer/mixer.c
@@ -318,12 +318,10 @@ static void mixer_setup_free(til_setup_t *setup)
 {
 	mixer_setup_t	*s = (mixer_setup_t *)setup;
 
-	if (s) {
-		for (size_t i = 0; i < nelems(s->inputs); i++)
-			til_setup_free(s->inputs[i].setup);
+	for (size_t i = 0; i < nelems(s->inputs); i++)
+		til_setup_free(s->inputs[i].setup);
 
-		free(setup);
-	}
+	free(setup);
 }
 
 
diff --git a/src/modules/montage/montage.c b/src/modules/montage/montage.c
index 8ee8df7..7dba5a6 100644
--- a/src/modules/montage/montage.c
+++ b/src/modules/montage/montage.c
@@ -216,11 +216,9 @@ static void montage_setup_free(til_setup_t *setup)
 {
 	montage_setup_t	*s = (montage_setup_t *)setup;
 
-	if (s) {
-		for (size_t i = 0; i < s->n_tiles; i++)
-			til_setup_free(s->tiles[i].setup);
-		free(setup);
-	}
+	for (size_t i = 0; i < s->n_tiles; i++)
+		til_setup_free(s->tiles[i].setup);
+	free(setup);
 }
 
 
diff --git a/src/modules/rkt/rkt.c b/src/modules/rkt/rkt.c
index 2e8e696..8790f53 100644
--- a/src/modules/rkt/rkt.c
+++ b/src/modules/rkt/rkt.c
@@ -387,15 +387,13 @@ static void rkt_setup_free(til_setup_t *setup)
 {
 	rkt_setup_t	*s = (rkt_setup_t *)setup;
 
-	if (s) {
-		for (size_t i = 0; i < s->n_scenes; i++)
-			til_setup_free(s->scenes[i].setup);
-
-		free((void *)s->base);
-		free((void *)s->host);
-		free((void *)s->scener_address);
-		free(setup);
-	}
+	for (size_t i = 0; i < s->n_scenes; i++)
+		til_setup_free(s->scenes[i].setup);
+
+	free((void *)s->base);
+	free((void *)s->host);
+	free((void *)s->scener_address);
+	free(setup);
 }
 
 
diff --git a/src/modules/roto/roto.c b/src/modules/roto/roto.c
index 8d71cba..4d97fa5 100644
--- a/src/modules/roto/roto.c
+++ b/src/modules/roto/roto.c
@@ -412,10 +412,8 @@ static void roto_setup_free(til_setup_t *setup)
 {
 	roto_setup_t	*s = (roto_setup_t *)setup;
 
-	if (s) {
-		til_setup_free(s->fill_module_setup);
-		free(setup);
-	}
+	til_setup_free(s->fill_module_setup);
+	free(setup);
 }