Refactored the lex function of the TrimmedLine in the BlockDirectiveParser

- Instead of incrementing the take count at every if conditions. We can increment at the end directly.
- This make code concise and hence easier to read and debug the while loop.

Author: Mayank

Sources/Markdown/Parser/BlockDirectiveParser.swift

@@ -408,29 +408,21 @@ struct TrimmedLine {
         while let c = prefix.next() {
             if isEscaped {
                 isEscaped = false
-                takeCount += 1
-                continue
             }
-            if allowEscape,
+            else if allowEscape,
                c == "\\" {
                 isEscaped = true
-                takeCount += 1
-                continue
             }
-            if isQuoted {
+            else if isQuoted {
                 if c == "\"" {
                     isQuoted = false
                 }
-                takeCount += 1
-                continue
             }
-            if allowQuote,
+            else if allowQuote,
                c == "\"" {
                 isQuoted = true
-                takeCount += 1
-                continue
             }
-            if case .stop = stop(c) {
+            else if case .stop = stop(c) {
                 break
             }
             takeCount += 1