Report .idt filename that threw exception

Signed-off-by: Simon Rozman <simon@rozman.si>

MSI.wsf

@@ -529,6 +529,7 @@
 
 				// Build translations.
 				for (var i = 1, argc = WScript.Arguments.Unnamed.Length; i < argc; i++) {
+					try {
 						// Open and parse IDT file(s).
 						var
 							idt_src_path = WScript.Arguments.Unnamed(i),
@@ -548,6 +549,9 @@
 									}
 								}
 						}
+					} catch (err) {
+						throw new Error(err.number, "" + WScript.Arguments.Unnamed(i) + ": " + err.description);
+					}
 				}
 
 				// Save to file.