Disable custom theme and fix png loading

We will have to update the zip handling later. Now at least TWRP
boots up to the GUI.

Change-Id: I4182896eb095cab52fb0f1c9c20b6605e35677b9
diff --git a/minuitwrp/resources.c b/minuitwrp/resources.c
index 3b833cc..4dd10a9 100644
--- a/minuitwrp/resources.c
+++ b/minuitwrp/resources.c
@@ -100,10 +100,10 @@
     int color_type, bit_depth;
     size_t width, height;
 
-    png_get_IHDR(png_ptr, info_ptr, width, height, &bit_depth,
+    png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth,
             &color_type, NULL, NULL, NULL);
 
-    png_byte* channels = png_get_channels(png_ptr, info_ptr);
+    png_byte channels = png_get_channels(png_ptr, info_ptr);
     size_t stride = 4 * width;
     size_t pixelSize = stride * height;