runtime_loader: fix CID 1211995, improve generation counting

There is no need to increase generation counter each time new DSO is
registered.

src/system/runtime_loader/elf_tls.cpp

@@ -116,7 +116,7 @@ TLSBlockTemplates::Register(const TLSBlockTemplate& block)
 		fTemplates.push_back(block);
 	}
 
-	fTemplates[dso].SetGeneration(fGeneration++);
+	fTemplates[dso].SetGeneration(fGeneration);
 	return dso;
 }
 
@@ -127,6 +127,7 @@ TLSBlockTemplates::Unregister(unsigned dso)
 	if (dso == unsigned(-1))
 		return;
 
+	fGeneration++;
 	fFreeDSOs.push_back(dso);
 }
 
@@ -155,6 +156,13 @@ TLSBlockTemplates::CreateBlock(unsigned dso)
 }
 
 
+TLSBlockTemplates::TLSBlockTemplates()
+	:
+	fGeneration(0)
+{
+}
+
+
 TLSBlock::TLSBlock()
 	:
 	fPointer(NULL)

src/system/runtime_loader/elf_tls.h

@@ -48,7 +48,7 @@ public:
 			TLSBlock	CreateBlock(unsigned dso);
 
 private:
-						TLSBlockTemplates() { }
+	inline				TLSBlockTemplates();
 
 	static	TLSBlockTemplates*	fInstance;