Added empty string checks

ext/sqlite/libsqlite/src/encode.c

@@ -176,9 +176,12 @@ int sqlite_decode_binary(const unsigned char *in, unsigned char *out){
   int i, e;
   unsigned char c;
   e = *(in++);
+  if (e == 0) {
+    return 0;
+  }
   i = 0;
   while( (c = *(in++))!=0 ){
-    if( c==1 ){
+    if (c == 1) {
       c = *(in++) - 1;
     }
     out[i++] = c + e;