Fix UC_USELESS_CONDITION SpotBugs warnings

Resolves "Condition has no effect" warnings in:
- HTMLComponent.java (Redundant SUPPORT_CSS check, fix variable shadowing)
- CSSEngine.java (Redundant indent >= 0 check)
- CSSParser.java (Incorrect EOF check for char)
- RECharacter.java (Duplicate whitespace check)
- Updated generate-quality-report.py to enforce this rule.

Author: google-labs-jules[bot]

CodenameOne/src/com/codename1/ui/html/CSSEngine.java

@@ -1338,9 +1338,7 @@ private void applyStyleToUIElement(Component ui, CSSElement selector, HTMLElemen
 
         // Text indentation
         int indent = selector.getAttrLengthVal(CSSElement.CSS_TEXT_INDENT, ui, htmlC.getWidth());
-        if (indent >= 0) { // Only positive (0 also as it may cancel previous margins)
-            setTextIndentationRecursive(ui, indent);
-        }
+        setTextIndentationRecursive(ui, indent);
 
         //
         // Font

CodenameOne/src/com/codename1/ui/html/CSSParser.java

@@ -107,7 +107,7 @@ private char handleCSSComment(ExtInputStreamReader r) throws IOException {
                 c = r.readCharFromReader();
             }
             c = r.readCharFromReader();
-            while (((int) c) != -1 && isWhiteSpace(c)) { //skip white spaces
+            while (c != (char) -1 && isWhiteSpace(c)) { //skip white spaces
                 c = r.readCharFromReader();
             }
         } else {

CodenameOne/src/com/codename1/ui/html/HTMLComponent.java

@@ -1801,7 +1801,7 @@ public void run() {
             //newLine(Component.LEFT); //flush buffer
             mainContainer.applyRTL((dir != null) && (dir.equalsIgnoreCase("rtl")));
 
-            if ((SUPPORT_CSS) && (loadCSS)) {
+            if (loadCSS) {
                 body.setAssociatedComponents(mainContainer);
                 if (threadQueue.getCSSCount() == -1) { // If there are no pending external CSS, we can already process the CSS
                     applyAllCSS(); // Note that this doesn't have to be on EDT as the main container is still not displayed
@@ -2968,9 +2968,9 @@ private void processTag(HTMLElement element, int align) {
                 case HTMLElement.TAG_H4:
                 case HTMLElement.TAG_H5:
                 case HTMLElement.TAG_H6:
-                    HTMLFont f = (HTMLFont) fonts.get(child.getTagName());
-                    if (f != null) {
-                        font = f;
+                    HTMLFont headerFont = (HTMLFont) fonts.get(child.getTagName());
+                    if (headerFont != null) {
+                        font = headerFont;
                     } else {
                         font = oldFont;
                     }

CodenameOne/src/com/codename1/util/regex/RECharacter.java

@@ -150,7 +150,7 @@ public static boolean isWhitespace(char c) {
         return ((type == SPACE_SEPARATOR || type == LINE_SEPARATOR ||
                 type == PARAGRAPH_SEPARATOR) && !(c == 0x00A0 || c == 0x2007 ||
                 c == 0x202F)) || c == 0x0009 || c == 0x000A || c == 0x000B ||
-                c == 0x000C || c == 0x000D || c == 0x0009 || c == 0x001C ||
+                c == 0x000C || c == 0x000D || c == 0x001C ||
                 c == 0x001D || c == 0x001E || c == 0x001F;
     }