congestion_multiplier as u64 (pyth-network#267)

Author: apfitzge

sdk/src/fee.rs

@@ -105,9 +105,9 @@ impl FeeStructure {
     ) -> u64 {
         // Fee based on compute units and signatures
         let congestion_multiplier = if lamports_per_signature == 0 {
-            0.0 // test only
+            0 // test only
         } else {
-            1.0 // multiplier that has no effect
+            1 // multiplier that has no effect
         };
 
         self.calculate_fee_details(
@@ -116,7 +116,7 @@ impl FeeStructure {
             include_loaded_account_data_size_in_fee,
         )
         .total_fee(remove_rounding_in_fee_calculation)
-        .saturating_mul(congestion_multiplier as u64)
+        .saturating_mul(congestion_multiplier)
     }
 
     /// Calculate fee details for `SanitizedMessage`