Tweaked C++ and Rust code to not use character entities (left over from copying Javadoc).

cpp/QrCode.hpp

@@ -98,7 +98,7 @@ class QrCode final {
 	private: int version;
 	
 	/* The width and height of this QR Code symbol, measured in modules.
-	 * Always equal to version × 4 + 17, in the range 21 to 177. */
+	 * Always equal to version * 4 + 17, in the range 21 to 177. */
 	private: int size;
 	
 	/* The error correction level used in this QR Code symbol. */

rust/src/lib.rs

@@ -37,7 +37,7 @@ pub struct QrCode {
 	version: Version,
 	
 	// The width and height of this QR Code symbol, measured in modules.
-	// Always equal to version × 4 + 17, in the range 21 to 177.
+	// Always equal to version * 4 + 17, in the range 21 to 177.
 	size: i32,
 	
 	// The error correction level used in this QR Code symbol.