more test_unistd_misc fixes

src/library_fs.js

@@ -1338,7 +1338,7 @@ mergeInto(LibraryManager.library, {
     ensureErrnoError: function() {
       if (FS.ErrnoError) return;
       FS.ErrnoError = function ErrnoError(errno, node) {
-        // Module.printErr(stackTrace()); // useful for debugging
+        //Module.printErr(stackTrace()); // useful for debugging
         this.node = node;
         this.setErrno = function(errno) {
           this.errno = errno;

tests/unistd/misc.c

@@ -54,10 +54,10 @@ int main() {
   printf(", errno: %d\n", errno);
   errno = 0;
 
-  printf("lockf(good): %d", lockf(f, 123, 456));
+  printf("lockf(good): %d", lockf(f, F_LOCK, 456));
   printf(", errno: %d\n", errno);
   errno = 0;
-  printf("lockf(bad): %d", lockf(42, 123, 456));
+  printf("lockf(bad): %d", lockf(42, F_LOCK, 456));
   printf(", errno: %d\n", errno);
   errno = 0;
 

tests/unistd/misc.out

@@ -9,7 +9,7 @@ tcsetpgrp(bad): -1, errno: 9
 link: -1, errno: 31
 lockf(good): 0, errno: 0
 lockf(bad): -1, errno: 9
-nice: 0, errno: 1
+nice: -1, errno: 1
 pause: -1, errno: 4
 pipe(good): -1, errno: 38
 pipe(bad): -1, errno: 38