Jean-Daniel Dupas patch that fixes a bad if statement with assignment.

git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@107671 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Commands/CommandCompletions.cpp b/source/Commands/CommandCompletions.cpp
index 3065e89..39bb1f4 100644
--- a/source/Commands/CommandCompletions.cpp
+++ b/source/Commands/CommandCompletions.cpp
@@ -240,7 +240,7 @@
     {
         int resolved_username_len = FileSpec::ResolveUsername(containing_part, containing_part, sizeof (containing_part));
         // User name doesn't exist, we're not getting any further...
-        if (resolved_username_len = 0 || resolved_username_len >= sizeof (containing_part))
+        if (resolved_username_len == 0 || resolved_username_len >= sizeof (containing_part))
             return matches.GetSize();
     }