FIX: Make Clippy happy

Automatic fixes

base/src/functions/engineering/complex.rs

@@ -188,10 +188,7 @@ impl Model {
         node: &Node,
         cell: CellReferenceIndex,
     ) -> Result<(f64, f64, Suffix), CalcResult> {
-        let value = match self.get_string(node, cell) {
-            Ok(s) => s,
-            Err(s) => return Err(s),
-        };
+        let value = self.get_string(node, cell)?;
         if value.is_empty() {
             return Ok((0.0, 0.0, Suffix::I));
         }

base/src/functions/financial.rs

@@ -14,14 +14,8 @@ use super::financial_util::{compute_irr, compute_npv, compute_rate, compute_xirr
 // https://github.com/apache/openoffice/blob/c014b5f2b55cff8d4b0c952d5c16d62ecde09ca1/main/scaddins/source/analysis/financial.cxx
 
 fn is_less_than_one_year(start_date: i64, end_date: i64) -> Result<bool, String> {
-    let end = match from_excel_date(end_date) {
-        Ok(s) => s,
-        Err(s) => return Err(s),
-    };
-    let start = match from_excel_date(start_date) {
-        Ok(s) => s,
-        Err(s) => return Err(s),
-    };
+    let end = from_excel_date(end_date)?;
+    let start = from_excel_date(start_date)?;
     if end_date - start_date < 365 {
         return Ok(true);
     }