Use CHECK rather than REQUIRE in individual regex tests

Don't prevent the remaining CheckMatch() tests from running if one of
them fails by using CHECK() rather than REQUIRE().

This is a bit awkward and we probably ought to use sections here
instead, but this change is more minimal.

This commit is best viewed ignoring whitespace-only changes.

tests/regex/wxregextest.cpp

@@ -79,12 +79,21 @@ CheckMatch(const char* pattern,
     INFO( "Pattern: " << pattern << FlagStr(flags) << ", match: " << text );
 
     wxRegEx re(pattern, compileFlags);
-    REQUIRE( re.IsValid() );
+    if ( !re.IsValid() )
+    {
+        FAIL("Regex compilation failed");
+        return;
+    }
 
-    bool ok = re.Matches(text, matchFlags);
+    if ( !re.Matches(text, matchFlags) )
+    {
+        CHECK( !expected );
+        return;
+    }
 
-    if (expected) {
+    CHECK( expected );
-        REQUIRE( ok );
+    if ( !expected )
+        return;
 
     wxStringTokenizer tkz(wxString(expected, *wxConvCurrent),
                           wxT("\t"), wxTOKEN_RET_EMPTY);
@@ -97,10 +106,6 @@ CheckMatch(const char* pattern,
 
     if ((flags & wxRE_NOSUB) == 0)
         CHECK(re.GetMatchCount() == i);
-    }
-    else {
-        CHECK( !ok );
-    }
 }
 
 TEST_CASE("wxRegEx::Match", "[regex][match]")