MM-82 Detect Column Types - Refactoring based on comments in PR 5
diff --git a/excel/src/main/java/org/apache/metamodel/excel/ExcelUtils.java b/excel/src/main/java/org/apache/metamodel/excel/ExcelUtils.java
index 6e50bd9..21491ec 100644
--- a/excel/src/main/java/org/apache/metamodel/excel/ExcelUtils.java
+++ b/excel/src/main/java/org/apache/metamodel/excel/ExcelUtils.java
@@ -185,7 +185,7 @@
             result = Boolean.toString(cell.getBooleanCellValue());
             break;
         case ERROR:
-            result = (String) getErrorResult(cell);
+            result = getErrorResult(cell);
             break;
         case FORMULA:
             result = getFormulaCellValue(wb, cell);