Unify caching in getter functions

README.md

@@ -88,8 +88,8 @@ The getter functions are setup to cache their results so any further access to t
 ```
 goos: darwin
 goarch: amd64
-BenchmarkGetJA3ByteString-4        	1000000000	         2.73 ns/op	       0 B/op	       0 allocs/op
-BenchmarkGetJA3String-4            	1000000000	         2.44 ns/op	       0 B/op	       0 allocs/op
-BenchmarkGetJA3Hash-4              	1000000000	         2.72 ns/op	       0 B/op	       0 allocs/op
-BenchmarkGetSNI-4                  	300000000	         5.61 ns/op	       0 B/op	       0 allocs/op
+BenchmarkGetJA3ByteString-4        	1000000000	         2.65 ns/op	       0 B/op	       0 allocs/op
+BenchmarkGetJA3String-4            	50000000	        39.3 ns/op	      64 B/op	       1 allocs/op
+BenchmarkGetJA3Hash-4              	1000000000	         2.40 ns/op	       0 B/op	       0 allocs/op
+BenchmarkGetSNI-4                  	300000000	         5.57 ns/op	       0 B/op	       0 allocs/op
 ```

ja3.go

@@ -20,7 +20,6 @@ type JA3 struct {
 	ellipticCurvePF []uint8
 	sni             []byte
 	ja3ByteString   []byte
-	ja3String       string
 	ja3Hash         string
 }
 
@@ -43,10 +42,7 @@ func (j *JA3) GetJA3ByteString() []byte {
 // GetJA3String returns the JA3 string as a string. This function uses caching, so repeated calls to this function on
 // the same JA3 object will not trigger any new calculations.
 func (j *JA3) GetJA3String() string {
-	if j.ja3String == "" {
-		j.ja3String = string(j.GetJA3ByteString())
-	}
-	return j.ja3String
+	return string(j.GetJA3ByteString())
 }
 
 // GetJA3Hash returns the MD5 Digest of the JA3 string in hexadecimal representation. This function uses caching, so