Building: Fix a couple of new warnings.

glslang/MachineIndependent/Initialize.cpp

@@ -2207,7 +2207,7 @@ void TBuiltIns::addSamplingFunctions(TSampler sampler, TString& typeName, int /*
 //
 // Add all the texture gather functions for the given type.
 //
-void TBuiltIns::addGatherFunctions(TSampler sampler, TString& typeName, int version, EProfile profile)
+void TBuiltIns::addGatherFunctions(TSampler sampler, TString& typeName, int version, EProfile /* profile */)
 {
     switch (sampler.dim) {
     case Esd2D:

glslang/MachineIndependent/Scan.h

@@ -88,7 +88,7 @@ public:
         // Make sure we do not read off the end of a string.
         // N.B. Sources can have a length of 0.
         int sourceToRead = currentSource;
-        int charToRead = currentChar;
+        size_t charToRead = currentChar;
         while(charToRead >= lengths[sourceToRead]) {
             charToRead = 0;
             sourceToRead += 1;