Add and apply InsertBraces statement

> Insert braces after control statements (if, else, for, do, and while)
> in C++ unless the control statements are inside macro definitions or
> the braces would enclose preprocessor directives.

(cherry picked from commit d051e1e8f8)

.clang-format

@@ -67,6 +67,7 @@ IncludeCategories:
   - Regex:           '.*'
     Priority:        0
 IndentExternBlock: NoIndent
+InsertBraces: true
 KeepEmptyLinesAtTheStartOfBlocks: false
 MaxEmptyLinesToKeep: 1
 PenaltyBreakAssignment: 30

.clang-format.headers

@@ -55,6 +55,7 @@ IncludeCategories:
   - Regex:           '".*"'
     Priority:        9
 IndentExternBlock: NoIndent
+InsertBraces: true
 KeepEmptyLinesAtTheStartOfBlocks: false
 MaxEmptyLinesToKeep: 1
 PenaltyBreakAssignment: 30

lib/isc/picohttpparser.c

@@ -739,7 +739,9 @@ Exit:
 		if (decoder->_total_overhead >= 100 * 1024 &&
 		    decoder->_total_read - decoder->_total_overhead <
 			    decoder->_total_read / 4)
+		{
 			ret = -1;
+		}
 	}
 	return ret;
 }