fix typos, mostly in comments
diff --git a/PC/os2emx/dlfcn.c b/PC/os2emx/dlfcn.c
index c9307da..9e88d5e 100644
--- a/PC/os2emx/dlfcn.c
+++ b/PC/os2emx/dlfcn.c
@@ -216,7 +216,7 @@
 	}
 }
 
-/* return a string describing last occured dl error */
+/* return a string describing last occurred dl error */
 char *dlerror()
 {
 	return dlerr;