Validates the `p_format` parameter in `Image::create` functions.

(cherry picked from commit 0b7ffd4f6867f71506ff345765aeb7874c5fa3e2)

core/image.cpp

@@ -1587,6 +1587,7 @@ void Image::create(int p_width, int p_height, bool p_use_mipmaps, Format p_forma
 	ERR_FAIL_COND_MSG(p_width > MAX_WIDTH, "Image width cannot be greater than " + itos(MAX_WIDTH) + ".");
 	ERR_FAIL_COND_MSG(p_height > MAX_HEIGHT, "Image height cannot be greater than " + itos(MAX_HEIGHT) + ".");
 	ERR_FAIL_COND_MSG(write_lock.ptr(), "Cannot create image when it is locked.");
+	ERR_FAIL_INDEX_MSG(p_format, FORMAT_MAX, "Image format out of range, please see Image's Format enum.");
 
 	int mm = 0;
 	int size = _get_dst_image_size(p_width, p_height, p_format, mm, p_use_mipmaps ? -1 : 0);
@@ -1607,6 +1608,7 @@ void Image::create(int p_width, int p_height, bool p_use_mipmaps, Format p_forma
 	ERR_FAIL_COND_MSG(p_height <= 0, "Image height must be greater than 0.");
 	ERR_FAIL_COND_MSG(p_width > MAX_WIDTH, "Image width cannot be greater than " + itos(MAX_WIDTH) + ".");
 	ERR_FAIL_COND_MSG(p_height > MAX_HEIGHT, "Image height cannot be greater than " + itos(MAX_HEIGHT) + ".");
+	ERR_FAIL_INDEX_MSG(p_format, FORMAT_MAX, "Image format out of range, please see Image's Format enum.");
 
 	int mm;
 	int size = _get_dst_image_size(p_width, p_height, p_format, mm, p_use_mipmaps ? -1 : 0);