winealsa: Fix some unsigned comparison < 0 warnings.

dlls/winealsa.drv/mixer.c

@@ -607,7 +607,7 @@ static mixer* MIX_GetMix(UINT wDevID)
 {
     mixer *mmixer;
 
-    if (wDevID < 0 || wDevID >= cards)
+    if (wDevID >= cards)
     {
         WARN("Invalid mixer id: %d\n", wDevID);
         return NULL;
@@ -888,7 +888,7 @@ static DWORD MIX_GetControlDetails(UINT wDevID, LPMIXERCONTROLDETAILS mctrld, DW
     if (!mmixer)
         return MMSYSERR_BADDEVICEID;
 
-    if (line < 0 || line >= mmixer->chans || !mmixer->controls[ctrl].enabled)
+    if (line >= mmixer->chans || !mmixer->controls[ctrl].enabled)
         return MIXERR_INVALCONTROL;
 
     ct = &mmixer->controls[ctrl];
@@ -1095,7 +1095,7 @@ static DWORD MIX_SetControlDetails(UINT wDevID, LPMIXERCONTROLDETAILS mctrld, DW
     if (!mmixer)
         return MMSYSERR_BADDEVICEID;
 
-    if (line < 0 || line >= mmixer->chans)
+    if (line >= mmixer->chans)
     {
         WARN("Invalid line id: %d not in range of 0-%d\n", line, mmixer->chans-1);
         return MMSYSERR_INVALPARAM;
@@ -1343,7 +1343,7 @@ static DWORD MIX_GetLineInfo(UINT wDevID, LPMIXERLINEW Ml, DWORD_PTR flags)
     }
 
     case MIXER_GETLINEINFOF_LINEID:
-        if (Ml->dwLineID < 0 || Ml->dwLineID >= mmixer->chans)
+        if (Ml->dwLineID >= mmixer->chans)
             return MIXERR_INVALLINE;
 
         TRACE("MIXER_GETLINEINFOF_LINEID %d\n", Ml->dwLineID);
@@ -1363,7 +1363,7 @@ static DWORD MIX_GetLineInfo(UINT wDevID, LPMIXERLINEW Ml, DWORD_PTR flags)
         break;
 
     case MIXER_GETLINEINFOF_DESTINATION:
-        if (Ml->dwDestination < 0 || Ml->dwDestination >= mmixer->dests)
+        if (Ml->dwDestination >= mmixer->dests)
         {
             WARN("dest %d out of bounds\n", Ml->dwDestination);
             return MIXERR_INVALLINE;
@@ -1375,13 +1375,13 @@ static DWORD MIX_GetLineInfo(UINT wDevID, LPMIXERLINEW Ml, DWORD_PTR flags)
         break;
 
     case MIXER_GETLINEINFOF_SOURCE:
-        if (Ml->dwDestination < 0 || Ml->dwDestination >= mmixer->dests)
+        if (Ml->dwDestination >= mmixer->dests)
         {
             WARN("dest %d for source out of bounds\n", Ml->dwDestination);
             return MIXERR_INVALLINE;
         }
 
-        if (Ml->dwSource < 0 || Ml->dwSource >= getsrccntfromchan(mmixer, Ml->dwDestination))
+        if (Ml->dwSource >= getsrccntfromchan(mmixer, Ml->dwDestination))
         {
             WARN("src %d out of bounds\n", Ml->dwSource);
             return MIXERR_INVALLINE;
@@ -1455,7 +1455,7 @@ static DWORD MIX_GetLineControls(UINT wDevID, LPMIXERLINECONTROLSW mlc, DWORD_PT
     if (flags == MIXER_GETLINECONTROLSF_ONEBYID)
         mlc->dwLineID = mlc->u.dwControlID / CONTROLSPERLINE;
 
-    if (mlc->dwLineID < 0 || mlc->dwLineID >= mmixer->chans)
+    if (mlc->dwLineID >= mmixer->chans)
     {
         TRACE("Invalid dwLineID %d\n", mlc->dwLineID);
         return MIXERR_INVALLINE;