Cleanup: fix harmless compiler warnings.

intern/cycles/render/camera.cpp

@@ -716,7 +716,7 @@ float Camera::world_to_raster_size(float3 P)
 		float3 D = transform_point(&worldtocamera, P);
 		float dist = len(D);
 
-		Ray ray = {0};
+		Ray ray = {{0}};
 
 		/* Distortion can become so great that the results become meaningless, there
 		 * may be a better way to do this, but calculating differentials from the

source/blender/blenkernel/intern/multires_reshape.c

@@ -87,14 +87,12 @@ BLI_INLINE int rotate_quad_to_corner(const float u, const float v,
 		*r_u = 2.0f * (1.0f - u);
 		*r_v = 2.0f * (1.0f - v);
 	}
-	else if (u <= 0.5f && v >= 0.5f) {
+	else {
+		BLI_assert(u <= 0.5f && v >= 0.5f);
 		corner = 3;
 		*r_u = 2.0f * (1.0f - v);
 		*r_v = 2.0f * u;
 	}
-	else {
-		BLI_assert(!"Unexpected corner configuration");
-	}
 	return corner;
 }
 

source/blender/blenkernel/intern/subdiv_ccg.c

@@ -237,13 +237,11 @@ BLI_INLINE void rotate_corner_to_quad(
 		*r_u = 0.5f + v * 0.5f;
 		*r_v = 0.5f + u * 0.5f;
 	}
-	else if (corner == 3) {
+	else {
+		BLI_assert(corner == 3);
 		*r_u = 0.5f - u * 0.5f;
 		*r_v = 0.5f + v * 0.5f;
 	}
-	else {
-		BLI_assert(!"Unexpected corner configuration");
-	}
 }
 
 static void subdiv_ccg_eval_regular_grid(CCGEvalGridsData *data,

source/blender/blenkernel/intern/subdiv_ccg_mask.c

@@ -93,14 +93,12 @@ BLI_INLINE int rotate_quad_to_corner(const float u, const float v,
 		*r_u = 2.0f * (1.0f - u);
 		*r_v = 2.0f * (1.0f - v);
 	}
-	else if (u <= 0.5f && v >= 0.5f) {
+	else {
+		BLI_assert(u <= 0.5f && v >= 0.5f);
 		corner = 3;
 		*r_u = 2.0f * (1.0f - v);
 		*r_v = 2.0f * u;
 	}
-	else {
-		BLI_assert(!"Unexpected corner configuration");
-	}
 	return corner;
 }
 

source/blender/blenkernel/intern/subdiv_displacement_multires.c

@@ -103,14 +103,12 @@ BLI_INLINE int rotate_quad_to_corner(const float u, const float v,
 		*r_u = 2.0f * (1.0f - u);
 		*r_v = 2.0f * (1.0f - v);
 	}
-	else if (u <= 0.5f && v >= 0.5f) {
+	else {
+		BLI_assert(u <= 0.5f && v >= 0.5f);
 		corner = 3;
 		*r_u = 2.0f * (1.0f - v);
 		*r_v = 2.0f * u;
 	}
-	else {
-		BLI_assert(!"Unexpected corner configuration");
-	}
 	return corner;
 }
 

source/blender/editors/mesh/editmesh_select_similar.c

@@ -287,7 +287,7 @@ static int similar_face_select_exec(bContext *C, wmOperator *op)
 		Object *ob = objects[ob_index];
 		BMEditMesh *em = BKE_editmesh_from_object(ob);
 		BMesh *bm = em->bm;
-		Material ***material_array;
+		Material ***material_array = NULL;
 		invert_m4_m4(ob->imat, ob->obmat);
 		int custom_data_offset = 0;
 
@@ -418,10 +418,10 @@ static int similar_face_select_exec(bContext *C, wmOperator *op)
 		BMEditMesh *em = BKE_editmesh_from_object(ob);
 		BMesh *bm = em->bm;
 		bool changed = false;
-		Material ***material_array;
+		Material ***material_array = NULL;
 		int custom_data_offset;
 
-		bool has_custom_data_layer;
+		bool has_custom_data_layer = false;
 		switch (type) {
 			case SIMFACE_MATERIAL:
 			{
@@ -880,7 +880,7 @@ static int similar_edge_select_exec(bContext *C, wmOperator *op)
 		BMesh *bm = em->bm;
 		bool changed = false;
 
-		bool has_custom_data_layer;
+		bool has_custom_data_layer = false;
 		switch (type) {
 			case SIMEDGE_FREESTYLE:
 			{