Remove uneccessary cast in test_swap

The cast is actually wrong as the return value of `get` is `int` already.

Author: Flamefire

test/test_fstream_special.cpp

@@ -222,6 +222,7 @@ void test_swap(const char* filename, const char* filename2)
     {
         const int curChar1 = f1.peek();
         const int curChar2 = f2.peek();
+        TEST_CONTEXT("ctr " << ctr << ": c1=" << curChar1 << " c2=" << curChar2);
         // Randomly do a no-op seek of either or both streams to flush internal buffer
         if(ctr % 10 == 0)
             TEST(f1.seekg(f1.tellg()));
@@ -234,9 +235,9 @@ void test_swap(const char* filename, const char* filename2)
             TEST(f1.seekg(f1.tellg()));
         else if(ctr % 15 == 4)
             TEST(f2.seekg(f2.tellg()));
-        TEST_EQ(f1.get(), char(curChar2));
+        TEST_EQ(f1.get(), curChar2);
         f1.swap(f2);
-        TEST_EQ(f1.get(), char(curChar1));
+        TEST_EQ(f1.get(), curChar1);
         ++ctr;
     }
 }