tests: Trim .nim files trailing whitespace

via OSX: find . -name '*.nim' -exec sed -i '' -E 's/[[:space:]]+$//' {} +

tests/array/tarrindx.nim

@@ -1,13 +1,13 @@
-# test another strange bug ... (I hate this compiler; it is much too buggy!)
-
-proc putEnv(key, val: string) =
-  # XXX: we have to leak memory here, as we cannot
-  # free it before the program ends (says Borland's
-  # documentation)
-  var
-    env: ptr array[0..500000, char]
-  env = cast[ptr array[0..500000, char]](alloc(len(key) + len(val) + 2))
-  for i in 0..len(key)-1: env[i] = key[i]
-  env[len(key)] = '='
-  for i in 0..len(val)-1:
-    env[len(key)+1+i] = val[i]
+# test another strange bug ... (I hate this compiler; it is much too buggy!)
+
+proc putEnv(key, val: string) =
+  # XXX: we have to leak memory here, as we cannot
+  # free it before the program ends (says Borland's
+  # documentation)
+  var
+    env: ptr array[0..500000, char]
+  env = cast[ptr array[0..500000, char]](alloc(len(key) + len(val) + 2))
+  for i in 0..len(key)-1: env[i] = key[i]
+  env[len(key)] = '='
+  for i in 0..len(val)-1:
+    env[len(key)+1+i] = val[i]