Adjust NR tests. More accurate.

src/tools/pgindent/pgindent

@@ -1492,9 +1492,9 @@ do
 			line2 = line3;
 		}
 		END {
-			if (NR > 1 && skips <= 1)
+			if (NR >= 2 && skips <= 1)
 				print line1;
-			if (NR > 2 && skips <= 2)
+			if (NR >= 1 && skips <= 2)
 				print line2;
 		}' |
 # remove blank line between opening brace and block comment
@@ -1520,9 +1520,9 @@ do
 			line2 = line3;
 		}
 		END {
-			if (NR > 1 && skips <= 1)
+			if (NR >= 2 && skips <= 1)
 				print line1;
-			if (NR > 2 && skips <= 2)
+			if (NR >= 1 && skips <= 2)
 				print line2;
 		}' |
 # remove blank line before #endif
@@ -1544,7 +1544,7 @@ do
 			line1 = line2;
 		}
 		END {
-			if (NR > 1 && skips <= 1)
+			if (NR >= 1 && skips <= 1)
 				print line1;
 		}' |
 # add blank line before #endif if it is the last line in the file
@@ -1556,7 +1556,7 @@ do
 			line1 = line2;
 		}
 		END {
-			if (NR > 1 && line2 ~ "^#endif")
+			if (NR >= 1 && line2 ~ "^#endif")
 				printf "\n";
 			print line1;
 		}' |