add underscores to _poserror and _stroserror

libsrc/common/_poserror.c

@@ -39,10 +39,10 @@
 
 
 
-void __fastcall__ _poserror (const char* msg)
+void __fastcall__ __poserror (const char* msg)
 {
     /* Fetch the message that corresponds to _oserror */
-    const char* errormsg = _stroserror (_oserror);
+    const char* errormsg = __stroserror (_oserror);
 
     /* Different output depending on msg */
     if (msg) {

libsrc/common/stroserr.s

@@ -1,11 +1,11 @@
 ;
 ; Ullrich von Bassewitz, 17.07.2002
 ;
-; const char* __fastcall__ _stroserror (unsigned char errcode);
+; const char* __fastcall__ __stroserror (unsigned char errcode);
 ; /* Map an operating system error number to an error message. */
 ;
 
-        .export         __stroserror
+        .export         ___stroserror
         .import         __sys_oserrlist
         .importzp       ptr1, tmp1
 
@@ -21,7 +21,7 @@
 ; and terminated by an entry with length zero that is returned if the
 ; error code could not be found.
 
-__stroserror:
+___stroserror:
         sta     tmp1                    ; Save the error code
 
         ldy     #<__sys_oserrlist

libsrc/geos-common/common/_poserror.c

@@ -9,9 +9,9 @@
 #include <errno.h>
 #include <geos.h>
 
-void __fastcall__ _poserror (const char* msg)
+void __fastcall__ __poserror (const char* msg)
 {
-    const char *errmsg = _stroserror(_oserror);
+    const char *errmsg = __stroserror(_oserror);
 
     ExitTurbo();
     if (msg && *msg) {