benchmarks: fix the iteration count of some benchmarks.

Some benchmarks wrongly executed the loop N+1 times ("0...N" instead of "0..<N")

mt

Author: eeckstein

benchmark/single-source/ArrayOfGenericPOD.swift

@@ -59,7 +59,7 @@ func genStructArray() {
 
 @inline(never)
 public func run_ArrayOfGenericPOD(_ N: Int) {
-  for _ in 0...N {
+  for _ in 0..<N {
     genEnumArray()
     genStructArray()
   }

benchmark/single-source/ArrayOfGenericRef.swift

@@ -94,7 +94,7 @@ func genRefStructArray() {
 
 @inline(never)
 public func run_ArrayOfGenericRef(_ N: Int) {
-  for _ in 0...N {
+  for _ in 0..<N {
     genPODRefArray()
     genCommonRefArray()
     genRefEnumArray()

benchmark/single-source/ArrayOfPOD.swift

@@ -61,7 +61,7 @@ func genStructArray() {
 
 @inline(never)
 public func run_ArrayOfPOD(_ N: Int) {
-  for _ in 0...N {
+  for _ in 0..<N {
     genIntArray()
     genEnumArray()
     genStructArray()

benchmark/single-source/ArrayOfRef.swift

@@ -105,7 +105,7 @@ func genRefStructArray() {
 
 @inline(never)
 public func run_ArrayOfRef(_ N: Int) {
-  for _ in 0...N {
+  for _ in 0..<N {
     genPODRefArray()
     genCommonRefArray()
     genRefEnumArray()

benchmark/single-source/Chars.swift

@@ -30,7 +30,7 @@ public func run_Chars(_ N: Int) {
     "2", "a", "t", "i", "o", "e", "q", "n", "X", "Y", "Z", "?", "m", "Z", ","
     ]
 
-  for _ in 0...N {
+  for _ in 0..<N {
     for firstChar in alphabet {
       for middleChar in alphabet {
         for lastChar in alphabet {

benchmark/single-source/SuperChars.swift

@@ -35,7 +35,7 @@ public func run_SuperChars(_ N: Int) {
     "2", "a", "t", "i", "o", "e", "q", "n", "X", "Y", "Z", "?", "m", "Z", ","
     ]
 
-  for _ in 0...N {
+  for _ in 0..<N {
     for firstChar in alphabet {
       for middleChar in alphabet {
         for lastChar in alphabet {