psxbios: Return value is always 1 for CloseTh and ChangeTh.

According to nocash PSX doc, ChangeThread and CloseThread should
always return 1. Fix it accordingly.

diff --git a/libpcsxcore/psxbios.c b/libpcsxcore/psxbios.c
index 3247402..7c908e3 100644 (file)
--- a/libpcsxcore/psxbios.c
+++ b/libpcsxcore/psxbios.c
@@ -1878,12 +1878,10 @@ void psxBios_CloseTh() { // 0f
 #ifdef PSXBIOS_LOG
        PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x0f], th);
 #endif
-
-       if (Thread[th].status == 0) {
-               v0 = 0;
-       } else {
+       /* The return value is always 1 (even if the handle was already closed). */
+       v0 = 1;
+       if (Thread[th].status != 0) {
                Thread[th].status = 0;
-               v0 = 1;
        }
 
        pc0 = ra;
@@ -1899,14 +1897,11 @@ void psxBios_ChangeTh() { // 10
 #ifdef PSXBIOS_LOG
 //     PSXBIOS_LOG("psxBios_%s: %x\n", biosB0n[0x10], th);
 #endif
-
+       /* The return value is always 1. */
+       v0 = 1;
        if (Thread[th].status == 0 || CurThread == th) {
-               v0 = 0;
-
                pc0 = ra;
        } else {
-               v0 = 1;
-
                if (Thread[CurThread].status == 2) {
                        Thread[CurThread].status = 1;
                        Thread[CurThread].func = ra;