[c] Fix errors due to Defold's compiler flags

spine-c/spine-c/src/spine/SkeletonBinary.c

@@ -101,7 +101,7 @@ static int string_starts_with(const char *str, const char *needle) {
 static char *string_copy(const char *str) {
 	if (str == NULL) return NULL;
 	int len = strlen(str);
-	char *tmp = malloc(len + 1);
+	char *tmp = (char *)malloc(len + 1);
 	strncpy(tmp, str, len);
 	tmp[len] = '\0';
 	return tmp;
@@ -614,7 +614,7 @@ static spAnimation *_spSkeletonBinary_readAnimation(spSkeletonBinary *self, cons
 				spInheritTimeline *timeline = spInheritTimeline_create(frameCount, boneIndex);
 				for (frame = 0; frame < frameCount; frame++) {
 					float time = readFloat(input);
-					spInherit inherit = readByte(input);
+					spInherit inherit = (spInherit) readByte(input);
 					spInheritTimeline_setFrame(timeline, frame, time, inherit);
 				}
 				spTimelineArray_add(timelines, SUPER(timeline));
@@ -1082,7 +1082,7 @@ spAttachment *spSkeletonBinary_readAttachment(spSkeletonBinary *self, _dataInput
 											  spSkeletonData *skeletonData, int /*bool*/ nonessential) {
 	int flags = readByte(input);
 	const char *name = (flags & 8) != 0 ? readStringRef(input, skeletonData) : attachmentName;
-	spAttachmentType type = (flags & 0x7);
+	spAttachmentType type = (spAttachmentType)(flags & 0x7);
 
 	switch (type) {
 		case SP_ATTACHMENT_REGION: {
@@ -1420,7 +1420,7 @@ spSkeletonData *spSkeletonBinary_readSkeletonData(spSkeletonBinary *self, const
 		data->shearX = readFloat(input);
 		data->shearY = readFloat(input);
 		data->length = readFloat(input) * self->scale;
-		data->inherit = readVarint(input, 1);
+		data->inherit = (spInherit)readVarint(input, 1);
 		data->skinRequired = readBoolean(input);
 		if (nonessential) {
 			readColor(input, &data->color.r, &data->color.g, &data->color.b, &data->color.a);
@@ -1542,9 +1542,9 @@ spSkeletonData *spSkeletonBinary_readSkeletonData(spSkeletonBinary *self, const
 			data->bones[ii] = skeletonData->bones[readVarint(input, 1)];
 		data->target = skeletonData->slots[readVarint(input, 1)];
 		int flags = readByte(input);
-		data->positionMode = (flags & 1);
-		data->spacingMode = ((flags >> 1) & 3);
-		data->rotateMode = ((flags >> 3) & 3);
+		data->positionMode = (spPositionMode)(flags & 1);
+		data->spacingMode = (spSpacingMode)((flags >> 1) & 3);
+		data->rotateMode = (spRotateMode)((flags >> 3) & 3);
 		if ((flags & 128) != 0) data->offsetRotation = readFloat(input);
 		data->position = readFloat(input);
 		if (data->positionMode == SP_POSITION_MODE_FIXED) data->position *= self->scale;