Fix incorrect use of skip in tests

Fixes #7. Fixes #9. Fixes rt.cpan.org 95922.

Author: xdg

t/mktemp.t

@@ -54,7 +54,9 @@ my $status = unlink0($fh, $template);
 if ($status) {
   ok( $status );
 } else {
-  skip("Skip test failed probably due to \$TMPDIR being on NFS",1);
+    SKIP: {
+        skip("Skip test failed probably due to \$TMPDIR being on NFS",1);
+    }
 }
 
 # MKSTEMPS
@@ -77,7 +79,9 @@ $status = unlink0($fh, $fname);
 if ($status) {
   ok($status);
 } else {
-  skip("Skip test failed probably due to cwd being on NFS",1)
+    SKIP: {
+        skip("Skip test failed probably due to cwd being on NFS",1)
+    }
 }
 
 # MKDTEMP

t/posix.t

@@ -34,7 +34,9 @@ my $status = unlink0($fh, $tmpnam);
 if ($status) {
   ok( $status );
 } else {
-  skip("Skip test failed probably due to \$TMPDIR being on NFS",1);
+    SKIP: {
+        skip("Skip test failed probably due to \$TMPDIR being on NFS",1);
+    }
 }
 
 # TMPFILE
@@ -67,7 +69,9 @@ if (defined $fh) {
 } else {
   # Skip all the remaining tests
   foreach (1..3) {
-    skip("Skip test failed probably due to \$TMPDIR being on NFS",1);
+    SKIP: {
+        skip("Skip test failed probably due to \$TMPDIR being on NFS",1);
+    }
   }
 }
 

t/tempfile.t

@@ -165,8 +165,9 @@ if ($fh) {
   ok( close($fh), "Close temp file" );
 
 } else {
-  skip "Skip Failed probably due to NFS", 1;
-  skip "Skip Failed probably due to NFS", 1;
+    SKIP: {
+        skip "Skip Failed probably due to NFS", 2;
+    }
 }
 
 # Create temp directory and chdir to it; it should still be removed on exit.