Fix implicit declaration of functions 'Image_isL8' and 'Image_bitMask'
and conversion between pointers to integer types with different sign.
https://github.com/IoLanguage/io/pull/388
https://github.com/IoLanguage/io/commit/3e115fabfd25cd14bb323dfcd1d83a02866dab7c
--- addons/Image/source/Image.h.orig
+++ addons/Image/source/Image.h
@@ -145,6 +145,11 @@ IOIMAGE_API Image* Image_applyMinFilter(Image* self, int filterWidth, int filter
 IOIMAGE_API Image* Image_applyWeightedMedianFilter(Image* self, int filterWidth, int filterHeight, UArray* filter);
 IOIMAGE_API Image* Image_applyNonlinearGradientsFilter(Image* self);
 
+IOIMAGE_API void Image_bitMask(Image *self, int component, int bitMask);
+
+// internals
+
+int Image_isL8(Image *self);
 
 #endif
 
--- addons/Image/source/IoImage.c.orig
+++ addons/Image/source/IoImage.c
@@ -687,7 +687,7 @@ IOIMAGE_API IoObject *IoImage_filterGauss(IoImage *self, IoObject *locals, IoMes
 	UArray_setItemType_(filter, CTYPE_int8_t);
 	UArray_setEncoding_(filter, CENCODING_NUMBER);
 	UArray_setSize_(filter, filterSize * filterSize);
-	int8_t *filterBytes = UArray_mutableBytes(filter);
+	int8_t *filterBytes = (int8_t *) UArray_mutableBytes(filter);
 	int x, y, x1, y1;
 	for(y = 0; y < filterSize; y++)
 	{
@@ -715,7 +715,7 @@ IOIMAGE_API IoObject *IoImage_filterUnsharpMask(IoImage *self, IoObject *locals,
 	UArray_setItemType_(filter, CTYPE_int8_t);
 	UArray_setEncoding_(filter, CENCODING_NUMBER);
 	UArray_setSize_(filter, 9);
-	int8_t *filterBytes = UArray_mutableBytes(filter);
+	int8_t *filterBytes = (int8_t *) UArray_mutableBytes(filter);
 	
 	filterBytes[0] = -1; filterBytes[1] = -1;    filterBytes[2] = -1;
 	filterBytes[3] = -1; filterBytes[4] = a + 8; filterBytes[5] = -1;
@@ -739,7 +739,7 @@ IOIMAGE_API IoObject *IoImage_filterSobel(IoImage *self, IoObject *locals, IoMes
 	UArray_setItemType_(filter, CTYPE_int8_t);
 	UArray_setEncoding_(filter, CENCODING_NUMBER);
 	UArray_setSize_(filter, 9);
-	int8_t *filterBytes = UArray_mutableBytes(filter);
+	int8_t *filterBytes = (int8_t *) UArray_mutableBytes(filter);
 	int i;
 	for(i = 0; i < 8; i++)
 	{
@@ -764,7 +764,7 @@ IOIMAGE_API IoObject *IoImage_filterKirsch(IoImage *self, IoObject *locals, IoMe
 	UArray_setItemType_(filter, CTYPE_int8_t);
 	UArray_setEncoding_(filter, CENCODING_NUMBER);
 	UArray_setSize_(filter, 9);
-	int8_t *filterBytes = UArray_mutableBytes(filter);
+	int8_t *filterBytes = (int8_t *) UArray_mutableBytes(filter);
 	int i;
 	for(i = 0; i < 8; i++)
 	{