Remove redundant MakeUCharSpan wrappers

src/rpc/rawtransaction.cpp

@@ -1344,7 +1344,7 @@ static RPCHelpMan combinepsbt()
 
     CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
     ssTx << merged_psbt;
-    return EncodeBase64(MakeUCharSpan(ssTx));
+    return EncodeBase64(ssTx);
 },
     };
 }
@@ -1483,7 +1483,7 @@ static RPCHelpMan createpsbt()
     CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
     ssTx << psbtx;
 
-    return EncodeBase64(MakeUCharSpan(ssTx));
+    return EncodeBase64(ssTx);
 },
     };
 }
@@ -1552,7 +1552,7 @@ static RPCHelpMan converttopsbt()
     CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
     ssTx << psbtx;
 
-    return EncodeBase64(MakeUCharSpan(ssTx));
+    return EncodeBase64(ssTx);
 },
     };
 }
@@ -1643,7 +1643,7 @@ static RPCHelpMan utxoupdatepsbt()
 
     CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
     ssTx << psbtx;
-    return EncodeBase64(MakeUCharSpan(ssTx));
+    return EncodeBase64(ssTx);
 },
     };
 }
@@ -1739,7 +1739,7 @@ static RPCHelpMan joinpsbts()
 
     CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
     ssTx << shuffled_psbt;
-    return EncodeBase64(MakeUCharSpan(ssTx));
+    return EncodeBase64(ssTx);
 },
     };
 }