[PATCH] C API: return NULL from LLVMGetFirstTarget instead of asserting

[Peter Zotov]

  Removed whitespace changes.

http://llvm-reviews.chandlerc.com/D1908

CHANGE SINCE LAST DIFF
  http://llvm-reviews.chandlerc.com/D1908?vs=4859&id=4881#toc

Files:
  lib/Target/TargetMachineC.cpp

Index: lib/Target/TargetMachineC.cpp
===================================================================
--- lib/Target/TargetMachineC.cpp
+++ lib/Target/TargetMachineC.cpp
@@ -60,8 +60,12 @@
 }
 
 LLVMTargetRef LLVMGetFirstTarget() {
-   const Target* target = &*TargetRegistry::begin();
-   return wrap(target);
+  if(TargetRegistry::begin() == TargetRegistry::end()) {
+    return NULL;
+  }
+
+  const Target* target = &*TargetRegistry::begin();
+  return wrap(target);
 }
 LLVMTargetRef LLVMGetNextTarget(LLVMTargetRef T) {
   return wrap(unwrap(T)->getNext());
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