Fixes.

src/jquery.qrcode.js

@@ -10,8 +10,6 @@
 		// Wrapper for the original QR code generator.
 	var QRCode = function (version, level, text) {
 
-			try {
-
 			// `qrcode` is the single public function that will be defined by the `QR Code Generator`
 			// at the end of the file.
 			var qr = qrcode(version, level);
@@ -50,10 +48,6 @@
 			this.moduleCount = moduleCount;
 			this.isDark = isDark;
 			this.extIsDarkFn = extIsDarkFn;
-
-			} catch (err) {
-				return null;
-			}
 		},
 
 		// Check if canvas is available in the browser (as Modernizr does)
@@ -70,10 +64,9 @@
 			minVersion = Math.max(1, minVersion);
 			maxVersion = Math.min(40, maxVersion);
 			for (var version = minVersion; version <= maxVersion; version += 1) {
-				var qr = new QRCode(version, level, text);
-				if (qr) {
-					return qr;
-				}
+				try {
+					return new QRCode(version, level, text);
+				} catch (err) {}
 			}
 
 			return null;