Attempt to address some windows nightly build errors

olla/src/Kernel.cpp

@@ -58,7 +58,7 @@ Kernel& Kernel::operator=(const Kernel& copy) {
     return *this;
 }
 
-string Kernel::Kernel::getName() const {
+string Kernel::getName() const {
     return impl->getName();
 }
 

olla/src/Stream.cpp

@@ -59,7 +59,7 @@ Stream& Stream::operator=(const Stream& copy) {
     return *this;
 }
 
-string Stream::Stream::getName() const {
+string Stream::getName() const {
     return impl->getName();
 }
 

tests/TestFindExclusions.cpp

@@ -172,6 +172,7 @@ public:
     void initialize(const vector<double>& masses) {
     }
     double execute(const Stream& positions) {
+        return 0.0;
     }
 };