Bug 452833 - Do not loop if we get SQLITE_SCHEMA

We used to have to try again if we got SQLITE_SCHEMA back from sqlite when we
prepare a statement.  However, this isn't needed with the new v2 interface,
which we now use.
r=bholley

storage/src/mozStorageStatement.cpp

@@ -113,14 +113,10 @@ mozStorageStatement::Initialize(mozStorageConnection *aDBConnection,
     sqlite3 *db = aDBConnection->GetNativeConnection();
     NS_ENSURE_TRUE(db != nsnull, NS_ERROR_NULL_POINTER);
 
-    int nRetries = 0;
     int srv;
-    while (nRetries < 2) {
     srv = sqlite3_prepare_v2(db, nsPromiseFlatCString(aSQLStatement).get(),
                              aSQLStatement.Length(), &mDBStatement, NULL);
-        if ((srv == SQLITE_SCHEMA && nRetries != 0) ||
-            (srv != SQLITE_SCHEMA && srv != SQLITE_OK))
-        {
+    if (srv != SQLITE_OK) {
 #ifdef PR_LOGGING
         PR_LOG(gStorageLog, PR_LOG_ERROR, ("Sqlite statement prepare error: %d '%s'", srv, sqlite3_errmsg(db)));
         PR_LOG(gStorageLog, PR_LOG_ERROR, ("Statement was: '%s'", nsPromiseFlatCString(aSQLStatement).get()));
@@ -128,12 +124,6 @@ mozStorageStatement::Initialize(mozStorageConnection *aDBConnection,
         return NS_ERROR_FAILURE;
     }
 
-        if (srv == SQLITE_OK)
-            break;
-
-        nRetries++;
-    }
-
     mDBConnection = aDBConnection;
     mParamCount = sqlite3_bind_parameter_count (mDBStatement);
     mResultColumnCount = sqlite3_column_count (mDBStatement);