Add remove extra braces code to pgindent.

Author: bmomjian

src/tools/pgindent/pgindent

@@ -797,6 +797,32 @@ do
 	detab -t8 -qc |
 	entab -t4 -qc |
 	sed 's;^\([A-Za-z_][^	]*\)[ 	][ 	]*\*$;\1 *;' | # move trailing * in function return type
+	awk '	{	line3 = $0;  /* remove un-needed braces around single statements */
+			if (skips > 0)
+				skips--;
+			if (line1 ~ "		*{$" &&
+			    line2 ~ "		*[^;{}]*;$" &&
+			    line3 ~ "		*}$")
+			{
+				print line2;
+				line1 = "";
+				line2 = "";
+				line3 = "";
+				skips = 3;
+			}
+			else
+	 			if (skips == 0 && NR >= 3)
+					print line1;
+			line1 = line2;
+			line2 = line3;
+			line3 = "";
+		}
+		END {
+			if (skips <= 1)
+				print line1;
+			if (skips <= 2)
+				print line2;
+	}' |
 	cat >/tmp/$$ && cat /tmp/$$ >$FILE
 done