Fix for DbgInfoPrinter.cpp:174:12: warning: ‘LineNo’ may be used uninitialized in this function.

llvm-svn: 140281
diff --git a/llvm/lib/Analysis/DbgInfoPrinter.cpp b/llvm/lib/Analysis/DbgInfoPrinter.cpp
index b23c351..cd832ab 100644
--- a/llvm/lib/Analysis/DbgInfoPrinter.cpp
+++ b/llvm/lib/Analysis/DbgInfoPrinter.cpp
@@ -171,7 +171,7 @@
 
 void PrintDbgInfo::printVariableDeclaration(const Value *V) {
   std::string DisplayName, File, Directory, Type;
-  unsigned LineNo;
+  unsigned LineNo = 0;
 
   if (!getLocationInfo(V, DisplayName, Type, LineNo, File, Directory))
     return;