refactor(ContentSecurityPolicyHeaderWriter): remove micro StringBuilder optimization.

It probably doesn't makes code faster but it makes it less obvious.

Author: php-coder

src/main/java/ru/mystamps/web/support/spring/security/ContentSecurityPolicyHeaderWriter.java

@@ -157,16 +157,6 @@ class ContentSecurityPolicyHeaderWriter implements HeaderWriter {
 
 	private static final char SEPARATOR = ';';
 
-	private static final int MIN_HEADER_LENGTH =
-		DEFAULT_SRC.length()
-		+ IMG_SRC.length()
-		+ FONT_SRC.length()
-		+ REPORT_URI.length()
-		+ STYLE_SRC.length()
-		+ SCRIPT_SRC.length()
-		// number of separators between directives
-		+ 5;
-	
 	private final boolean useCdn;
 	private final boolean useSingleHost;
 	private final boolean hasH2Console;
@@ -184,7 +174,7 @@ protected String constructDirectives(String uri) {
 		boolean onAddSeriesPage = uri.equals(SeriesUrl.ADD_SERIES_PAGE);
 		boolean onH2ConsolePage = hasH2Console && uri.startsWith(H2_CONSOLE_PATTERN);
 
-		StringBuilder sb = new StringBuilder(MIN_HEADER_LENGTH);
+		StringBuilder sb = new StringBuilder();
 
 		sb.append(DEFAULT_SRC).append(SEPARATOR)
 		  .append(IMG_SRC).append(useSingleHost ? IMG_SRC_SELF : IMG_SRC_ALT).append(SEPARATOR)