Merge pull request #79 from PIVX-Labs/fix_subtract_from_amt

Don't always subtract from amount

src/transaction.rs

@@ -482,7 +482,7 @@ fn choose_utxos(
         }
     }
     if total < *amount + fee {
-        if total >= *amount {
+        if total >= *amount && *amount > fee {
             *amount -= fee;
         } else {
             Err("Not enough balance")?;
@@ -537,7 +537,7 @@ fn choose_notes(
     }
 
     if total < *amount + fee {
-        if total >= *amount {
+        if total >= *amount && *amount > fee {
             *amount -= fee
         } else {
             Err("Not enough balance")?;