Fixed verifyTransfer

Author: maxsam4

contracts/tokens/SecurityToken.sol

@@ -543,25 +543,33 @@ contract SecurityToken is StandardToken, DetailedERC20, ReentrancyGuard, Registr
     ) 
         internal 
         checkGranularity(_value) 
-        returns (bool validTransfer) 
+        returns (bool) 
     {
-        if (transfersFrozen)
-            return false;
-
-        validTransfer = true;
-        address module;
-
-        for (uint256 i = 0; i < modules[TRANSFER_KEY].length; i++) {
-            module = modules[TRANSFER_KEY][i];
-            if (!modulesToData[module].isArchived) {
-                ITransferManager.Result valid = ITransferManager(module).verifyTransfer(_from, _to, _value, _data, _isTransfer);
-                if (valid == ITransferManager.Result.INVALID) {
-                    validTransfer = false;
-                } else if (valid == ITransferManager.Result.FORCE_VALID) {
-                    return true;
+        if (!transfersFrozen) {
+            if (modules[TRANSFER_KEY].length == 0)
+                return true;
+
+            bool isValid;
+            bool isInvalid;
+            address module;
+
+            for (uint256 i = 0; i < modules[TRANSFER_KEY].length; i++) {
+                module = modules[TRANSFER_KEY][i];
+                if (!modulesToData[module].isArchived) {
+                    ITransferManager.Result valid = ITransferManager(module).verifyTransfer(_from, _to, _value, _data, _isTransfer);
+                    if (valid == ITransferManager.Result.INVALID) {
+                        isInvalid = true;
+                    } else if (valid == ITransferManager.Result.VALID) {
+                        isValid = true;
+                    } else if (valid == ITransferManager.Result.FORCE_VALID) {
+                        return true;
+                    }
                 }
             }
+            if (isValid && !isInvalid)
+                return true;
         }
+        return false;
     }
 
     /**