Have the windows implementation of xDelete return SQLITE_IOERR_DELETE_NOENT

if the file to be deleted does not exist.  The unix implementation was
previously modified to behave this way.  The current changes simply brings
the two implementations into alignment.

FossilOrigin-Name: d4c36d4991b048133efb21b251ab57fa66764d9d

manifest

@@ -1,5 +1,5 @@
-C Strive\sto\suse\sposix_fallocate()\srather\sthan\sftruncate()\swhen\s\nposix_fallocate()\sis\savailable.\s\sTicket\s[5eaa61ea18].
-D 2012-11-13T11:16:04.644
+C Have\sthe\swindows\simplementation\sof\sxDelete\sreturn\sSQLITE_IOERR_DELETE_NOENT\nif\sthe\sfile\sto\sbe\sdeleted\sdoes\snot\sexist.\s\sThe\sunix\simplementation\swas\npreviously\smodified\sto\sbehave\sthis\sway.\s\sThe\scurrent\schanges\ssimply\sbrings\nthe\stwo\simplementations\sinto\salignment.
+D 2012-11-20T15:06:57.977
 F Makefile.arm-wince-mingw32ce-gcc d6df77f1f48d690bd73162294bbba7f59507c72f
 F Makefile.in 82c41c0ed4cc94dd3cc7d498575b84c57c2c2384
 F Makefile.linux-gcc 91d710bdc4998cb015f39edf3cb314ec4f4d7e23
@@ -161,7 +161,7 @@ F src/os.c e1acdc09ff3ac2412945cca9766e2dcf4675f31c
 F src/os.h 027491c77d2404c0a678bb3fb06286f331eb9b57
 F src/os_common.h 92815ed65f805560b66166e3583470ff94478f04
 F src/os_unix.c b75d9b0876ad3fde151843ad389b4c3dd727c662
-F src/os_win.c 43ec1285357e5d5d919cb0492eac775c58ad7d12
+F src/os_win.c 1003f13a187bdab1d2cb54d7a930ac875dc7cf08
 F src/pager.c ed53fe75a269c1d67645fe079ea0f3f0ce6492d5
 F src/pager.h 1109a06578ec5574dc2c74cf8d9f69daf36fe3e0
 F src/parse.y f29df90bd3adc64b33114ab1de9fb7768fcf2099
@@ -1024,7 +1024,7 @@ F tool/vdbe-compress.tcl f12c884766bd14277f4fcedcae07078011717381
 F tool/warnings-clang.sh f6aa929dc20ef1f856af04a730772f59283631d4
 F tool/warnings.sh fbc018d67fd7395f440c28f33ef0f94420226381
 F tool/win/sqlite.vsix 97894c2790eda7b5bce3cc79cb2a8ec2fde9b3ac
-P 5a3b07f0f5dfae7eea870303f52f37d6a17f1da2 597333f1024092b94bcd8772541e19a0f707bd40
-R 1da6d6b008a37af0f12b5b83b4203af6
+P 29980b08ec591f695386b715df72d4afb6ffc3fb
+R b34ddf6d9c41f9627ecb66c931c8da70
 U drh
-Z 308917846cd590cd935ef45fbc502739
+Z d5d273e9e92a86e1ab421c06a18a3cfd

manifest.uuid

@@ -1 +1 @@
-29980b08ec591f695386b715df72d4afb6ffc3fb
+d4c36d4991b048133efb21b251ab57fa66764d9d

src/os_win.c

@@ -3888,14 +3888,14 @@ static int winDelete(
                                   &sAttrData) ){
         attr = sAttrData.dwFileAttributes;
       }else{
-        rc = SQLITE_OK; /* Already gone? */
+        rc = SQLITE_IOERR_DELETE_NOENT; /* Already gone? */
         break;
       }
 #else
       attr = osGetFileAttributesW(zConverted);
 #endif
       if ( attr==INVALID_FILE_ATTRIBUTES ){
-        rc = SQLITE_OK; /* Already gone? */
+        rc = SQLITE_IOERR_DELETE_NOENT; /* Already gone? */
         break;
       }
       if ( attr&FILE_ATTRIBUTE_DIRECTORY ){
@@ -3935,7 +3935,7 @@ static int winDelete(
     } while(1);
   }
 #endif
-  if( rc ){
+  if( rc && rc!=SQLITE_IOERR_DELETE_NOENT ){
     rc = winLogError(SQLITE_IOERR_DELETE, lastErrno,
              "winDelete", zFilename);
   }else{