fixes c2nim regression; do not produce more newlines

compiler/renderer.nim

@@ -37,8 +37,8 @@ type
     inGenericParams: bool
     checkAnon: bool        # we're in a context that can contain sfAnon
     inPragma: int
-    pendingNewlineCount: int
     when defined(nimpretty):
+      pendingNewlineCount: int
       origContent: string
 
 
@@ -113,7 +113,10 @@ proc addTok(g: var TSrcGen, kind: TTokType, s: string) =
 
 proc addPendingNL(g: var TSrcGen) =
   if g.pendingNL >= 0:
+    when defined(nimpretty):
       let newlines = repeat("\n", clamp(g.pendingNewlineCount, 1, 3))
+    else:
+      const newlines = "\n"
     addTok(g, tkSpaces, newlines & spaces(g.pendingNL))
     g.lineLen = g.pendingNL
     g.pendingNL = - 1
@@ -139,7 +142,7 @@ proc putNL(g: var TSrcGen) =
 proc optNL(g: var TSrcGen, indent: int) =
   g.pendingNL = indent
   g.lineLen = indent
-  g.pendingNewlineCount = 0
+  when defined(nimpretty): g.pendingNewlineCount = 0
 
 proc optNL(g: var TSrcGen) =
   optNL(g, g.indent)
@@ -147,7 +150,7 @@ proc optNL(g: var TSrcGen) =
 proc optNL(g: var TSrcGen; a, b: PNode) =
   g.pendingNL = g.indent
   g.lineLen = g.indent
-  g.pendingNewlineCount = lineDiff(a, b)
+  when defined(nimpretty): g.pendingNewlineCount = lineDiff(a, b)
 
 proc indentNL(g: var TSrcGen) =
   inc(g.indent, IndentWidth)