fix indent

Author: samukweku

src/core/expr/fexpr_fillna.cc

@@ -55,9 +55,9 @@ class FExpr_FillNA : public FExpr_Func {
         out +=", value=";
         out += value_->repr();
       } else {
-        out += ", reverse=";
-        out += reverse_? "True" : "False";
-      }
+          out += ", reverse=";
+          out += reverse_? "True" : "False";
+        }
       out += ')';
       return out;
     }
@@ -83,12 +83,12 @@ class FExpr_FillNA : public FExpr_Func {
               indices[i] = static_cast<int32_t>(fill_id);
             }
           } else {
-            for (size_t i = i1; i < i2; ++i) {
-              size_t is_valid = col.get_element_isvalid(i);
-              fill_id = is_valid? i : fill_id;
-              indices[i] = static_cast<int32_t>(fill_id);
+              for (size_t i = i1; i < i2; ++i) {
+                size_t is_valid = col.get_element_isvalid(i);
+                fill_id = is_valid? i : fill_id;
+                indices[i] = static_cast<int32_t>(fill_id);
+              }
             }
-          }
 
         }
       );
@@ -142,8 +142,8 @@ class FExpr_FillNA : public FExpr_Func {
         if (!gby) {
           gby = Groupby::single_group(wf.nrows());
         } else {
-          wf.increase_grouping_mode(Grouping::GtoALL);
-        }
+            wf.increase_grouping_mode(Grouping::GtoALL);
+          }
 
         for (size_t i = 0; i < wf.ncols(); ++i) {
           bool is_grouped = ctx.has_group_column(

src/core/expr/fnary/rowcount.cc

@@ -58,9 +58,10 @@ Column FExpr_RowCount::apply_function(colvec&& columns,
   }
   for (size_t i = 0; i < columns.size(); ++i) {
     xassert(columns[i].nrows() == nrows);
-    bool is_void_column = columns[i].stype() == SType::VOID;
-    columns[i] = is_void_column? Const_ColumnImpl::make_bool_column(columns[i].nrows(), true)
-                               : Column(new Isna_ColumnImpl(std::move(columns[i])));
+    Column coli = columns[i];
+    bool is_void_column = coli.stype() == SType::VOID;
+    columns[i] = is_void_column? Const_ColumnImpl::make_bool_column(coli.nrows(), true)
+                               : Column(new Isna_ColumnImpl(std::move(coli)));
   }
   return Column(new FuncNary_ColumnImpl<int32_t>(
                       std::move(columns), op_rowcount, nrows, SType::INT32));