Fixed a typo in the comments

Nothing more to add, really.

src/vs/code/electron-main/main.ts

@@ -138,7 +138,7 @@ function setupIPC(accessor: ServicesAccessor): TPromise<Server> {
 
 					// it happens on Linux and OS X that the pipe is left behind
 					// let's delete it, since we can't connect to it
-					// and the retry the whole thing
+					// and then retry the whole thing
 					try {
 						fs.unlinkSync(environmentService.mainIPCHandle);
 					} catch (e) {
@@ -214,4 +214,4 @@ function main() {
 	}).done(null, err => instantiationService.invokeFunction(quit, err));
 }
 
-main();
\ No newline at end of file
+main();