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;
diff --git a/PC/os2emx/dlfcn.h b/PC/os2emx/dlfcn.h
index c429834..49abecf 100644
--- a/PC/os2emx/dlfcn.h
+++ b/PC/os2emx/dlfcn.h
@@ -45,7 +45,7 @@
 /* free dynamicaly-linked library */
 int dlclose(void *handle);
 
-/* return a string describing last occured dl error */
+/* return a string describing last occurred dl error */
 char *dlerror(void);
 
 #endif /* !_DLFCN_H */