Avoid allocating space to hold the prepared statements for CREATE statements

when parsing the schema of an existing database, since those prepared
statements are never used..  This helps to make startup faster,

FossilOrigin-Name: d01e9f2d00dc439c529cd8885a219fcddbaad73b9f471b020e2a0c18e2add69b

manifest

@@ -1,5 +1,5 @@
-C Faster\sand\ssmaller\stest\sto\sensure\sthat\sthe\ssqlite_schema.sql\sfield\sis\salways\na\sCREATE\sstatement\sof\ssome\skind.
-D 2021-01-01T21:02:37.996
+C Avoid\sallocating\sspace\sto\shold\sthe\sprepared\sstatements\sfor\sCREATE\sstatements\nwhen\sparsing\sthe\sschema\sof\san\sexisting\sdatabase,\ssince\sthose\sprepared\nstatements\sare\snever\sused..\s\sThis\shelps\sto\smake\sstartup\sfaster,
+D 2021-01-01T22:06:17.152
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
 F LICENSE.md df5091916dbb40e6e9686186587125e1b2ff51f022cc334e886c19a0e9982724
@@ -484,7 +484,7 @@ F src/btmutex.c 8acc2f464ee76324bf13310df5692a262b801808984c1b79defb2503bbafadb6
 F src/btree.c 0f9cb686871ae668817673f0823b55d1bcadbc86ea28bd22c590b064a8322d5a
 F src/btree.h 285f8377aa1353185a32bf455faafa9ff9a0d40d074d60509534d14990c7829e
 F src/btreeInt.h 7614cae30f95b6aed0c7cac7718276a55cfe2c77058cbfd8bef5b75329757331
-F src/build.c 7a9983015d707482329820eb0ab6bc014554cbd89f8f0312e88ee47ca924257d
+F src/build.c d4c06261b0e532523ede58dc511381a7a9c155132e4b65a6bb2ff76fe657793a
 F src/callback.c d0b853dd413255d2e337b34545e54d888ea02f20da5ad0e63585b389624c4a6c
 F src/complete.c a3634ab1e687055cd002e11b8f43eb75c17da23e
 F src/ctime.c 2a322b9a3d75771fb4d99e0702851f4f68dda982507a0f798eefb0712969a410
@@ -1895,7 +1895,7 @@ F vsixtest/vsixtest.tcl 6a9a6ab600c25a91a7acc6293828957a386a8a93
 F vsixtest/vsixtest.vcxproj.data 2ed517e100c66dc455b492e1a33350c1b20fbcdc
 F vsixtest/vsixtest.vcxproj.filters 37e51ffedcdb064aad6ff33b6148725226cd608e
 F vsixtest/vsixtest_TemporaryKey.pfx e5b1b036facdb453873e7084e1cae9102ccc67a0
-P 6f25f2529f1495a26129d7d407979906e4962b2de351f901d41cb037d05ba780
-R b56645f386266a2944ab2c45a4a49580
+P 76de2bb04b1c02a6c0300cd61d9b3d2477d845aa0d1cdb9dbe4f354b9fedd923
+R df14a0f8e3c8c0f24b4bc5fa275286c3
 U drh
-Z 5ad0d6addcb4bd606a3544d738c2cf50
+Z f56f3715fca7ebd8ed5abb62c2ed9411

manifest.uuid

@@ -1 +1 @@
-76de2bb04b1c02a6c0300cd61d9b3d2477d845aa0d1cdb9dbe4f354b9fedd923
+d01e9f2d00dc439c529cd8885a219fcddbaad73b9f471b020e2a0c18e2add69b

src/build.c

@@ -143,6 +143,10 @@ void sqlite3FinishCoding(Parse *pParse){
   /* Begin by generating some termination code at the end of the
   ** vdbe program
   */
+  if( pParse->pVdbe==0 && db->init.busy ){
+    pParse->rc = SQLITE_DONE;
+    return;
+  }
   v = sqlite3GetVdbe(pParse);
   assert( !pParse->isMultiWrite 
        || sqlite3VdbeAssertMayAbort(v, pParse->mayAbort));