descriptor: Fix clang -Wimplicit-int-conversion warnings

For the 16-bit case especially, the result of the `or` is implicitly
promoted to `int`, then when returned was warning:

warning: implicit conversion loses integer precision: 'int' to 'uint16_t' (aka 'unsigned short') [-Wimplicit-int-conversion]

Add more casts to shut it up.

Closes libusb#1541

libusb/descriptor.c

@@ -32,16 +32,16 @@
 
 static inline uint16_t ReadLittleEndian16(const uint8_t p[2])
 {
-	return (uint16_t)p[1] << 8 |
-	       (uint16_t)p[0];
+	return (uint16_t)((uint16_t)p[1] << 8 |
+			  (uint16_t)p[0]);
 }
 
 static inline uint32_t ReadLittleEndian32(const uint8_t p[4])
 {
-	return (uint32_t)p[3] << 24 |
-	       (uint32_t)p[2] << 16 |
-	       (uint32_t)p[1] << 8 |
-	       (uint32_t)p[0];
+	return (uint32_t)((uint32_t)p[3] << 24 |
+			  (uint32_t)p[2] << 16 |
+			  (uint32_t)p[1] << 8 |
+			  (uint32_t)p[0]);
 }
 
 static void clear_endpoint(struct libusb_endpoint_descriptor *endpoint)

libusb/version_nano.h

@@ -1 +1 @@
-#define LIBUSB_NANO 11934
+#define LIBUSB_NANO 11935