Cast a string size variable to 64-bit to avoid any possibility of

integer overflow.

Author: D. Richard Hipp

src/printf.c

@@ -921,7 +921,7 @@ static int sqlite3StrAccumEnlarge(StrAccum *p, int N){
   }else{
     char *zOld = isMalloced(p) ? p->zText : 0;
     i64 szNew = p->nChar;
-    szNew += N + 1;
+    szNew += (sqlite3_int64)N + 1;
     if( szNew+p->nChar<=p->mxAlloc ){
       /* Force exponential buffer size growth as long as it does not overflow,
       ** to avoid having to call this routine too often */