Make sure mem3.c releases its mutex on an sqlite3_shutdown() call.

FossilOrigin-Name: 16254ad5aad355acedf72e0a1c618438041d5889

manifest

@@ -1,5 +1,8 @@
-C Add\sfurther\stest\scases\sto\se_fkey.test.
-D 2009-10-13T10:39:17
+-----BEGIN PGP SIGNED MESSAGE-----
+Hash: SHA1
+
+C Make\ssure\smem3.c\sreleases\sits\smutex\son\san\ssqlite3_shutdown()\scall.
+D 2009-10-13T12:48:44
 F Makefile.arm-wince-mingw32ce-gcc fcd5e9cd67fe88836360bb4f9ef4cb7f8e2fb5a0
 F Makefile.in 4ca3f1dd6efa2075bcb27f4dc43eef749877740d
 F Makefile.linux-gcc d53183f4aa6a9192d249731c90dbdffbd2c68654
@@ -132,7 +135,7 @@ F src/malloc.c b1725183bcc4ce2e569f1b65da844dc3e4c7a643
 F src/mem0.c f2f84062d1f35814d6535c9f9e33de3bfb3b132c
 F src/mem1.c e6d5c23941288df8191b8a98c28e3f57771e2270
 F src/mem2.c d02bd6a5b34f2d59012a852615621939d9c09548
-F src/mem3.c 67153ec933e08b70714055e872efb58a6b287939
+F src/mem3.c 805ab642adfafa171781a5d8ab112119dfaef118
 F src/mem5.c 4837b795ebdecc0cfe1522cd0c8b2c5d84ea490d
 F src/memjournal.c e68cb5f7e828b84d5bf2ea16c5d87f1ed7e9fe7f
 F src/mutex.c 828a40bc7bf79f01ef95ccbf8db8b02857739449
@@ -756,7 +759,14 @@ F tool/speedtest2.tcl ee2149167303ba8e95af97873c575c3e0fab58ff
 F tool/speedtest8.c 2902c46588c40b55661e471d7a86e4dd71a18224
 F tool/speedtest8inst1.c 293327bc76823f473684d589a8160bde1f52c14e
 F tool/vdbe-compress.tcl d70ea6d8a19e3571d7ab8c9b75cba86d1173ff0f
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-U dan
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+R a902a0fe985d2575bdd2782dd262b00c
+U drh
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manifest.uuid

@@ -1 +1 @@
-c85e58743a87bfbea6376c237e5e3a6909184f6c
+16254ad5aad355acedf72e0a1c618438041d5889

src/mem3.c

@@ -578,6 +578,7 @@ static int memsys3Init(void *NotUsed){
 */
 static void memsys3Shutdown(void *NotUsed){
   UNUSED_PARAMETER(NotUsed);
+  mem3.mutex = 0;
   return;
 }