SPR-8858 Fix in AntPathMatcher.combine(..)

Currently the combine method consolidates "/*" and "/hotel" 
into "/hotel". However if the first pattern contains URI template 
variables, the consolidation seems wrong. The fix is to prevent
the consolidation if the first pattern contains "{".

org.springframework.core/src/main/java/org/springframework/util/AntPathMatcher.java

@@ -299,7 +299,7 @@ public class AntPathMatcher implements PathMatcher {
 		else if (!StringUtils.hasText(pattern2)) {
 			return pattern1;
 		}
-		else if (match(pattern1, pattern2)) {
+		else if (!pattern1.contains("{") && match(pattern1, pattern2)) {
 			return pattern2;
 		}
 		else if (pattern1.endsWith("/*")) {

org.springframework.core/src/test/java/org/springframework/util/AntPathMatcherTests.java

@@ -407,7 +407,10 @@ public class AntPathMatcherTests {
 		assertEquals("/hotel.html", pathMatcher.combine("/*.html", "/hotel.html"));
 		assertEquals("/hotel.html", pathMatcher.combine("/*.html", "/hotel"));
 		assertEquals("/hotel.html", pathMatcher.combine("/*.html", "/hotel.*"));
+		assertEquals("/*.html", pathMatcher.combine("/**", "/*.html"));
+		assertEquals("/*.html", pathMatcher.combine("/*", "/*.html"));
 		assertEquals("/*.html", pathMatcher.combine("/*.*", "/*.html"));
+		assertEquals("/{foo}/bar", pathMatcher.combine("/{foo}", "/bar"));
 	}
 
 	@Test

org.springframework.web.servlet/src/test/java/org/springframework/web/servlet/mvc/annotation/ServletAnnotationMappingUtilsTests.java

@@ -148,10 +148,11 @@ public class ServletAnnotationMappingUtilsTests {
 	@Test
 	public void checkHeadersKeyValueNoMatchWithNegation() {
 		MockHttpServletRequest request = new MockHttpServletRequest("GET", "/");
-		request.addHeader("header1", "value1");
-		String[] headers = new String[]{"header1!=value1"};
-		boolean result = ServletAnnotationMappingUtils.checkHeaders(headers, request);
-		assertFalse("Invalid request method result", result);
+		request.addHeader("Accept-Encoding", "gzip");
+		String[] headers1 = new String[]{"Accept-Encoding!=gzip"};
+		String[] headers2 = new String[]{"Accept-Encoding=gzip"};
+		assertFalse(ServletAnnotationMappingUtils.checkHeaders(headers1, request));
+		assertTrue(ServletAnnotationMappingUtils.checkHeaders(headers2, request));
 	}
 
 	@Test