twain_32: Remove an unnecessary DllMain entry point.

dlls/twain_32/dsm_ctrl.c

@@ -207,7 +207,7 @@ TW_UINT16 TWAIN_OpenDS (pTW_IDENTITY pOrigin, TW_MEMREF pData)
 
 	TRACE("DG_CONTROL/DAT_IDENTITY/MSG_OPENDS\n");
         TRACE("pIdentity is %s\n", pIdentity->ProductName);
-	if (DSM_currentState != 3) {
+	if (!DSM_initialized) {
 		FIXME("seq error\n");
 		DSM_twCC = TWCC_SEQERROR;
 		return TWRC_FAILURE;
@@ -281,10 +281,9 @@ TW_UINT16 TWAIN_CloseDSM (pTW_IDENTITY pOrigin, TW_MEMREF pData)
 
     TRACE("DG_CONTROL/DAT_PARENT/MSG_CLOSEDSM\n");
 
-    if (DSM_currentState == 3)
+    if (DSM_initialized)
     {
         DSM_initialized = FALSE;
-        DSM_currentState = 2;
 
         /* If there are data sources still open, close them now. */
         while (currentDS != NULL)
@@ -309,12 +308,9 @@ TW_UINT16 TWAIN_OpenDSM (pTW_IDENTITY pOrigin, TW_MEMREF pData)
 	TW_UINT16 twRC = TWRC_SUCCESS;
 
 	TRACE("DG_CONTROL/DAT_PARENT/MSG_OPENDSM\n");
-	if (DSM_currentState == 2) {
         if (!DSM_initialized) {
 		DSM_currentDevice = 0;
 		DSM_initialized = TRUE;
-		}
-        	DSM_currentState = 3;
 		DSM_twCC = TWCC_SUCCESS;
 		twRC = TWRC_SUCCESS;
 	} else {

dlls/twain_32/twain32_main.c

@@ -43,25 +43,6 @@ static activeDS *TWAIN_LookupSource (const TW_IDENTITY *pDest)
     return pSource;
 }
 
-BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
-{
-    TRACE("%p,%x,%p\n", hinstDLL, fdwReason, lpvReserved);
-
-    switch (fdwReason)
-    {
-        case DLL_PROCESS_ATTACH:
-            DisableThreadLibraryCalls(hinstDLL);
-            DSM_currentState = 2;
-            break;
-
-        case DLL_PROCESS_DETACH:
-            DSM_currentState = 1;
-            break;
-    }
-
-    return TRUE;
-}
-
 static TW_UINT16 TWAIN_SourceManagerHandler (
            pTW_IDENTITY pOrigin,
            TW_UINT16   DAT,

dlls/twain_32/twain_i.h

@@ -39,7 +39,6 @@ typedef struct tagActiveDS
     DSENTRYPROC		dsEntry;
 } activeDS;
 
-TW_UINT16 DSM_currentState DECLSPEC_HIDDEN;     /* current state of Source Manager */
 TW_UINT16 DSM_twCC DECLSPEC_HIDDEN;             /* current condition code of Source Manager */
 
 activeDS *activeSources DECLSPEC_HIDDEN;	/* list of active data sources */