Fix a problem on this branch causing checkpoints that do not proceed because they can't get the CHECKPOINT lock to return incorrect output values.

FossilOrigin-Name: 5a98820c3d20766813bb4b0da23247ac90f380c07827ff13b61d5b606d8311aa

manifest

@@ -1,5 +1,5 @@
-C Enable\sthis\sbranch\sto\srun\sboth\swith\sand\swithout\sthe\s-DSQLITE_USE_SEH\soption.
-D 2021-08-19T23:10:57.409
+C Fix\sa\sproblem\son\sthis\sbranch\scausing\scheckpoints\sthat\sdo\snot\sproceed\sbecause\sthey\scan't\sget\sthe\sCHECKPOINT\slock\sto\sreturn\sincorrect\soutput\svalues.
+D 2021-08-20T11:50:12.817
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -628,7 +628,7 @@ F src/vdbetrace.c 666c6fd9f1b62be6999e072a45b913e3c2c3518bc60dfd4d54fe304130acb7
 F src/vdbevtab.c f99b275366c5fc5e2d99f734729880994ab9500bdafde7fae3b02d562b9d323c
 F src/vtab.c 88404ac1517903b3eb2abe256772ee95bb09f81ac0a17e13afe5d467df4de4ee
 F src/vxworks.h d2988f4e5a61a4dfe82c6524dd3d6e4f2ce3cdb9
-F src/wal.c c07f7f1301f2af98e2ae83b5bde451b715da14ca88a355f85a7d4656f8f295c3
+F src/wal.c 42c64a0c198c0610a4f54158faff9ad8b0f3f390cb03c1a69692dc70f886b711
 F src/wal.h c3aa7825bfa2fe0d85bef2db94655f99870a285778baa36307c0a16da32b226a
 F src/walker.c 7342becedf3f8a26f9817f08436bdf8b56ad69af83705f6b9320a0ad3092c2ac
 F src/where.c 99b6e13664a7bd9a553c554978d0e253066995dade621f44cffa8928c8b493b5
@@ -1921,7 +1921,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 5c5fa47076c5da25ca92248df3a4c11b90a0225a07f05d7220fa95d9bbb36f43
-R 7dea1ca77fe483a4591a9d63bfe86a5f
-U drh
-Z 84658daaaacd80f58fddb8eaeaf9e417
+P 840e0a14ebc4a85d4ede0223287d4c1e4465e9f20c3c43bfc74775dddec1fa8f
+R 97abf4da384cedc02121f231f21869ab
+U dan
+Z 53bdf1f79fced94468e78efd135afd05

manifest.uuid

@@ -1 +1 @@
-840e0a14ebc4a85d4ede0223287d4c1e4465e9f20c3c43bfc74775dddec1fa8f
+5a98820c3d20766813bb4b0da23247ac90f380c07827ff13b61d5b606d8311aa

src/wal.c

@@ -4115,7 +4115,6 @@ int sqlite3WalCheckpoint(
       }else{
         rc = walCheckpoint(pWal, db, eMode2, xBusy2, pBusyArg, sync_flags,zBuf);
       }
-    }
 
       /* If no error occurred, set the output variables. */
       if( rc==SQLITE_OK || rc==SQLITE_BUSY ){
@@ -4123,6 +4122,7 @@ int sqlite3WalCheckpoint(
         if( pnCkpt ) *pnCkpt = (int)(walCkptInfo(pWal)->nBackfill);
       }
     }
+  }
   SEH_EXCEPT( rc = walHandleException(pWal); )
 
   if( isChanged ){